Math 8 Review Questions

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Math 8 Review Questions

• Work on these questions on your own and click
  the action button for the next question or
  answer.
• Click the start action button below to begin.

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Math 8 Review Questions

• 1. Find the circumference and area of the circle.
  Write your answer in the nearest tenth.

Area ?r2 (3.14)(2.5cm2) 19.6cm2
C 2?r 2(3.14)2.5cm 15.7cm
r 2.5 cm
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Math 8 Review Questions

• 2. What is the height of the equilateral
  triangle? Answer in nearest tenth.

h ?
b 6 cm
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Math 8 Review Questions

• 3. What is the area of an equilateral triangle?
  (Answer in nearest tenth)

Area triangle 1/2(base x height) 1/2(6cm
x 5.19cm) 15.57cm2 ? 15.6cm The
equilateral triangle with 3 sides of 6cm each has
an area of 15.6cm.
h
b 6 cm
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Math 8 Review Questions

• 4. What is the area of a regular hexagon?

Area hexagon Area 6 x triangle 6(1/2(6cm
x 5.19cm) 6(15.6cm2) ? 93.6cm2 The
area of a regular hexagon is about 93.6cm2.
l 6 cm
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Math 8 Review Questions

• 5. A regular hexagon is inscribed in the circle.
  Find the pink region.

Area pink region Area circle - Area hexagon
?r2 - 6(1/2(6cm x 5.19cm) ?(6cm)2 -
6(15.6cm2) ? 113.1 - 93.6cm2 ? 19.5cm2
The area of the pink region is about 19.5cm2.
h ? 5.2 cm
b 6 cm
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Math 8 Review Questions

• 6. Which equation most likely describes the
  relation indicated by the table below?

A. y x 5 B. y x 3 C. y -x 5 D. y -x
- 3
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Math 8 Review Questions

• 7. Write an inequality for the graph below.

A. y -2/3x 2 B. y 2/3x 2 C. y -2/3x
3 D. y 2/3x 3 E. y -3/2x 2 F. y
3/2x 2 G. y -3/2x 3
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Math 8 Review Questions

• 8.

-2x - 50
Output
Input
Using the function machine from the diagram, what
is the output if input is -10?
A. -70 C. 30 B. -30 D. -250
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Math 8 Review Questions

• 9. The inequality for the graph below is.

A. y gt -2/3x 4 B. y lt 2/3x 4 C. y gt -2/3x
6 D. y lt 2/3x 6 E. y gt -3/2x 4 F. y lt
3/2x 4 G. y gt -3/2x 6
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Math 8 Review Questions

• 10. Which of these points lie in the shaded
  region of the graph?

A (2,3) B (2, -3) C (-2, 3) D (-2, -3)
E (3, 2) F (3, -2) G (-3, 2) H (-3, -2)
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Math 8 Review Questions

• 11.

x(-2x 25)
Output
Input
Using the function machine from the diagram, what
is the output if input is 5?
A. 5 C. 15 B. 35 D. 75
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Math 8 Review Questions

• 12. Eliz sells cookie basket for 35 each and
  charges 6 per chocolate chip cookie. If one
  filled basket sells for 107, how many cookies
  are in it?
• A. 10 C. 14
• B. 12 D. 16

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Math 8 Review Questions

• 13. A weather balloon in the shape of a sphere
  has a surface area of 160 m2. If the formula for
  the surface area of a sphere is SA 4?r2, to
  the nearest tenth of a meter, what is the radius
  of the balloon?

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Math 8 Review Questions

• 14. Courtney placed a 14-ft ladder 5 feet from a
  building. Approximately how high does the ladder
  reach?
• a) 9 d) 11
• b) 10 e) 12
• c) 11 f) 13

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Math 8 Review Questions

• 15. Kristin found that the radius of her bike
  tire was 14 inches. What is the circumference of
  the tire?
• a) 43.9 in
• b) 87.9 in
• c) 175.8 in
• d) 615.7 in

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Math 8 Review Questions

• 16. Find the perimeter of the figure.

A. 31 units B. 32 units C. 33 units D. 34
units E. 35 units F. 36 units G. 37 units
2
5
4
2
4
2
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Math 8 Review Questions

• 17. Find the area of the figure.

A. 31 square units B. 32 suqare units C. 33
square units D. 34 square units E. 35 square
units F. 36 square units G. 37 square unit
2
5
4
2
4
2
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Math 8 Review Questions

• 18. Find the exact area of the rectangle on a 1
  centimeter grid.

A. 15cm2 D. 24cm2 B. 20cm2 E. 28cm2 C. 22cm2
F. 30cm2
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Math 8 Review Questions

• 19. Find the area of the triangle.

A. 325.5cm2 B. 298.2cm2 C. 220.1cm2
D. 62.75cm2 E. 149.1cm2 F. 110.05cm2
14.2cm
15.5 cm
21.0 cm
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Math 8 Review Questions

• 20. Kristin wants to put up a fence around her
  long term field research site. How much fencing
  should she buy? Round your answer to the nearest
  foot.

a) 27.6 in b) 55.3 in c) 243.3 in d) 973.1 cm
Diameter 17.6cm
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Math 8 Review Questions

• 21. Which formula represents the Pythagorean
  Theorem?
• A. a b c
• B. a2 b2 c
• C. a2 b2 c2
• D. a2 b2 c2

c
a
b
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Math 8 Review Questions

• 22. Find the area of the triangle.

a) 96 square units b) 48 square units c) 28
square units d) 20 square units
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Math 8 Review Questions

• 23. Write three less than twice the width equals
  15 as an algebraic expression.

a) 3 lt 2w 15 b) 2w ? 3 15 c) w 3 15
d) 2w 3 15
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Math 8 Review Questions

• 24. Sara created a table of inputs and outputs
  from the What's My Rule? game. Find the
  corresponding rule.

a) n 4m - 2 b) n 4(m 3) c) n (m 4) 4
d) n 4(m 3) 1
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Math 8 Review Questions

• 25. In a package of candy, there are 3 red
  candies for every yellow candy. Write a rule for
  the relationship between the two variables if r
  represents red candies and y represents yellow
  candies.

a) r 3y b) y 3 r c) r y 3 d) y 3r
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Math 8 Review Questions

• 26. Name a face of the solid.

a) ABCH b) DEFG c) ADEF d) BCHE
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Math 8 Review Questions

• 27. Find the area of the ground level of the
  building shown if each unit represents 20 cm.

a) 40 cm2 b) 700 cm2 c) 12,000 cm2 d) 14,000
cm2 e) 16,000 cm2
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Math 8 Review Questions

• 28. Find the volume of the ground level of the
  building shown if each unit represents 10 cm.

a) 160 cm2 b) 2,22 cm2 c) 120,000 cm2 d) 140,000
cm2 e) 160,000 cm2
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Math 8 Review Questions

• 29. How many floors are in the building if each
  floor is 18 feet high and each unit represents 20
  feet?

a) 8 floors b) 9 floors c) 10 floors d) 11
floors e) 12 floors
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Math 8 Review Questions

• 30. Determine the volume of the prism below.

a) 48 cm3 b) 7,70 cm3 c) 2,040 cm3 d) 3,060
cm3 e) 4,080 cm3
15 cm
17 cm
16 cm
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Math 8 Review Questions

• 31. Find the volume of the cylinder below to the
  nearest tenth.

a) 19.6 cm3 b) 28.1 cm3 c) 427.3 cm3 d) 1,815.8
cm3 e) 7263.4 cm3
8 cm
17 cm
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Math 8 Review Questions

• 32. Find the volume of the prism.

a) 17 cm3 b) 30 cm3 c) 60 cm3 d) 70 cm3 e) 120
cm3
4 cm
10 cm
3 cm
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Math 8 Review Questions

• 33. Find the volume of the solid.

a) 2.5 cm3 b) 3.0 cm3 c) 3.5 cm3 d) 4.0
cm3 e) 4.5 cm3
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Math 8 Review Questions

• 34. Find the volume of the pyramid. Round to the
  nearest tenth.

a) 16.1 cm3 b) 31.4 cm3 c) 47.1 cm3 d) 62.8
cm3 e) 94.2 cm3
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Math 8 Review Questions

• 35. Find the volume of the cone. Round to the
  nearest tenth.

a) 13.5 cm3 b) 16.1 cm3 c) 28.6 cm3 d) 57.3
cm3 e) 85.9 cm3
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Math 8 Review Questions

• 36. The volume of a square pyramid is ______ the
  volume of a square prism.

a) one fourth b) one third c) two third
d) half e) equal to
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Math 8 Review Questions

• 37. Write an equation to represent the
  balance-scale picture.

6 4x - 2
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Math 8 Review Questions
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