SOLUTIONS TO REVIEW PROBLEMS RADIUS
(1) D = 2r
r = _D_
2
r = 15 inches
2
r = 7 1/2 inches
(2) C = π r
r = _C_
2 π
r = 18.8499 inches
2 x 3.14
r = 18.8499 inches
6.28
r = 3 inches
(3) C = 2 π r
C = 2 x 3.14 x 10 feet
C = 6.28 x 10 feet
C = 62.8 feet
(4) C = π D
C = 3.14 x 20 feet
C = 62.8 feet
(5) D = 2r
D = 2 x 15 feet
D = 30 feet
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