SOLUTION: The surface area of a plane of radius r is given by the formula A=πr^2. Find the volume of a sphere whose area is 120cm^2

Algebra ->  Finance -> SOLUTION: The surface area of a plane of radius r is given by the formula A=πr^2. Find the volume of a sphere whose area is 120cm^2      Log On


   



Question 1189126: The surface area of a plane of radius r is given by the formula A=πr^2. Find the volume of a sphere whose area is 120cm^2
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Area=4πr^2 for a sphere
120 cm^2=4πr^2
so πr^2=30 cm^2
r=3.09 cm
volume V=4πr^3
=370.82 cm^3 (I rounded at the end)

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
The surface area of a plane of radius r is given by the formula A=πr^2.
Find the volume of a sphere whose area is 120〖cm〗^2
~~~~~~~~~~~


In your post,  the premise is irrelevant to the question,  and vice versa.

The general impression is as if the problem's composer and a person
who posted it to the forum, are unfamiliar with elementary human logic
and with basics of elementary Math.