Page 28 - Math Course 2 (Book 2)
P. 28
Congruent and Similar Solids
Two sizes of balloons are being used for Two sizes of balloons are being used for
decorating at a party. When fully inflated, the decorating at a party. When fully inflated, the
balloons are spheres. The first balloon has a balloons are spheres. The first balloon has a
diameter of 18 inches while the second balloon has diameter of 18 inches while the second balloon has
a radius of 7 inches. Find the ratio of the surface a radius of 7 inches. Find the ratio of the volumes
areas of the two balloons. of the two balloons.
A. 18:7 A. 9:7
B. 9:7 B. 81:49
C. 18:14 C. 729:343
D. 81:49 D. 162:98
Answer Answer
Skill Practice!
Determine whether each pair of solids are similar, congruent, or neither.
1. 3.
2. 4.
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