8th Grade Math Chapter 9b Review

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8th Grade MathChapter 9b Review
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Chapter 9b Review

• Give the formulas for
• a) area of a circle
• b) circumference of a circle

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Chapter 9b Review
Answer

• Give the formulas for
• a) area of a circle
• b) circumference of a circle

A ?r2
C ?d
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Chapter 9b Review

• 2) Give the formulas for
• a) area of a triangle
• b) area of a trapezoid

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Chapter 9b Review
Answer

• 2) Give the formulas for
• a) area of a triangle
• b) area of a trapezoid

bh A 2
(b1 b2)h A 2
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Chapter 9b Review

• 3) Find the perimeter and area of a rectangle
  with l 12 m and w 4 m.

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Chapter 9b Review
Answer

• 3) Find the perimeter and area of a rectangle
  with l 12 m and w 4 m.

Perimeter 32 m Area 48 m2
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Chapter 9b Review

• 4) Find the perimeter and area of this triangle.

8 in
6 in
5 in
10 in
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Chapter 9b Review
Answer

• 4) Find the perimeter and area of this triangle.

Perimeter 24 in Area 25 in2
8 in
6 in
5 in
10 in
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Chapter 9b Review

• 5) Name the shape. Find the surface area.

3 cm
10 cm
6 cm
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Chapter 9b Review
Answer

• 5) Name the shape. Find the surface area.

3 cm
10 cm
6 cm
Rectangular prism SA 216 cm2
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Chapter 9b Review

• 6) Find the volume.

3 cm
10 cm
6 cm
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Chapter 9b Review
Answer

• 6) Find the volume.

3 cm
10 cm
6 cm
volume 180 cm3
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Chapter 9b Review

• 7) Name the shape. Find the surface area.

6 m
9 m
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Chapter 9b Review
Answer

• 7) Name the shape. Find the surface area.

6 m
9 m
Cylinder SA 226.08 m2
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Chapter 9b Review

• 8) Find the volume.

6 m
9 m
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Chapter 9b Review
Answer

• 8) Find the volume.

6 m
9 m
V 254.34 m3
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Chapter 9b Review

• 9) Name the shape. Find the surface area.

4 in
10 in
2 in
1.5 in
5 in
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Chapter 9b Review
Answer

• 9) Name the shape. Find the surface area.

4 in
10 in
2 in
1.5 in
5 in
Trapezoidal prism SA 143.5 in2
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Chapter 9b Review

• 10) Find the volume.

4 in
10 in
2 in
1.5 in
5 in
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Chapter 9b Review
Answer

• 10) Find the volume.

4 in
10 in
2 in
1.5 in
5 in
V 67.5 in3