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marshall27 [118]
3 years ago
7

If the diameter of a regulation size basketball is 9.4 inches, what is the surface area? Round to the nearest tenth.

Mathematics
2 answers:
navik [9.2K]3 years ago
7 0
SA=4pir^2
d/2=r
9.4/2=r=4.7

SA=4*3.141592*4.7^2
SA=227.591

answer is D
kondaur [170]3 years ago
5 0
Given,

Diameter of the basketball = 9.4 inches
∴ Radius of the basketball = diameter ÷ 2 = 9.4 ÷ 2 = 4.7 inches
π = 3.14159

Surface area of the basketball is the surface area of the sphere = 4 π r² = 4 × 3.141 x 4.7² = 277.59 = 277.6 inches²
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