Posted by Heather on .
The radius R of a sphere is 5.6cm. Calculate the sphere's surface area A.
Use the value 3.14, and round your answer to the nearest tenth.

geometry 
drwls,
Can you calculate 4 pi R^2?
If you need a calculator, just type
4*3.14*(5.6)^2 into a Google search box.
http://www.google.com/search?client=safari&rls=en&q=4*3.14*(5.6)%5E2&ie=UTF8&oe=UTF8