Question

the radius of a sphere is R. find the ratio of its surface areas to the area of a circle of the same radius ​

Answer 1

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.