1 answer
(click or scroll down)
respectively. We can use the formula for the surface area of a sphere, which is 4Ï€r^2, where r is the radius.
Since the radius of sphere a is three times larger than the radius of sphere b, we can let the radius of sphere b be r and the radius of sphere a be 3r.
Therefore, the surface area of sphere a (Sa) is 4Ï€(3r)^2 = 36Ï€r^2.
And the surface area of sphere b (Sb) is 4Ï€r^2.
So, Sa = 36Ï€r^2 and Sb = 4Ï€r^2.