4/13 Adv. Alg/Trig Bell Ringer

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4/13 Adv. Alg/Trig Bell Ringer

• 4 from Monday
• (x 2)(x 4) (x 4)(x 2) ?
• A. 0
• B. 2x2 4x 16
• C. -4x
• D. 4x
• E. -4x 16

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4/13 Adv. Alg/Trig Bell Ringer

• 12 from Monday
• For all x,
• (10x4 x2 2x 8) (3x4 3x3 2x 8) ?
• A. 7x4 3x3 x2 16
• B. 7x4 4x2 16
• C. 7x4 3x3 x2 4
• D. 7x4 2x2 4x
• E. 13x4 3x3 x2 4x

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4/13 News and Notes

• Perfection from Monday 7th
• ACT WORKSHOP TODAY
• Tomorrows Plan
• HW Checked?

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What is perimeter?

• Distance AROUND a 2-D figure

P L L W W P 2L 2W
W
L
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What is Area?

• Space INSIDE a 2-D figure

A LW What about a triangle?
W
L
½ of a rectangle, so A ½ (LW) or ½(bh)
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What is Volume?

• Space inside a 3-D Object -gt Think about how much
  water would fill up a glass.

V Area of base Height
V (LW) Height
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How does this apply to circles?

• Perimeter of circle CIRCUMFERENCE
• C 2pr, where r is the radius.
• Diameter 2r (distance across circle)
• Area pr2
• Can you go back and forth?

r
d
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Question 1

• Whats the area of the shaded region given
  diameter of circle is 3 in. and length of
  rectangle is 6 in.?

3 in.
L 6in.
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Question 2

• What is the perimeter of a square given that the
  area is 64 sq. ft.
• A LW
• 64 LW
• 64 LL
• 64 L2
• L 8
• P 8888
• P 8(4) 32 ft.

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PRACTICE!!!!!