Page 64 - Math Course 3 (Book 2)

Similar Solids

Find Missing Measures Find Missing Measures

The rectangular prisms below are similar. Find the
Example height of prism B.

A. 0.4 in
The cylinders to the right are similar. Find the B. 0.9 in
radius of cylinder A. C. 2 in
D. 4.5 in
x
8 cm

4.5 cm 6 cm

Cylinder A Cylinder B

radius of cylinder A = height of cylinder A
radius of cylinder B height of cylinder B

x = 4.5 Substitute the known values.
8 6

6x = 8(4.5) Find the cross products.

6x = 36 Simplify.

x = 6 Divide each side by 6. Answer

The radius of cylinder A is 6
Answer
centimeters.

Your Turn!

Identify Similar Solids
Determine whether the pair of solids is similar. Determine whether the pair of solids is similar.

A. yes A. yes
B. no B. no
C. They are congruent. C. They are congruent.
D. cannot be determined D. cannot be determined

Answer Answer

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