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olya-2409 [2.1K]
3 years ago
7

The radius of a small ball is around 4.89796 cm. the radius of a basketball is about 2.45 times larger. what is the ratio of the

surface areas of the small ball and a basketball?
Mathematics
1 answer:
expeople1 [14]3 years ago
6 0
Formula for surface area of a sphere of radius r is A = 4pi*r^2.

The same formula, for the case where the radius is 2.45 times greater, comes out to A = 4pi*[2.45r]^2.

Just find the ratio of

4pi*r^2 to 4pi*[2.45r]^2.  It is 1/6.


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