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A leather ball has a diameter of 28.4 cm. Which is the area of the piece of leather used on the surface of the ball?

a 268.85 pi cm^2
b 806.56 pi cm^2
c 3226.24 pi cm^2
d 3817.72 pi cm^2

User Hatsumi
by
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1 Answer

3 votes

Answer:


A=806.56\pi\ cm^2

Explanation:

Given that,

The diameter of a leather ball, d = 28.4 cm

Radius, r = 14.2 cm

We need to find the area of the piece of leather used on the surface of the ball. The surface area of the ball is given by :


A=4\pi r^2\\\\A=4* \pi* (14.2)^2\\\\A=806.56\pi\ cm^2

So, the area of the piece of leather is
806.56\pi\ cm^2. The correct option is (b).

User Androme
by
8.4k points
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