the radius of a sphere is R. find the ratio of its surface areas to the area of a circle of the same radius
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Answer:
Step-by-step explanation:
Given radius = R
This, area of circle = pi x R x R
And surface area of sphere = 4 x pi x R x R
Dividing both
We get the ratio- pi x R xR / pi x 4 x R xR
I.e 1:4 is the and.
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