Question

Hi Im am not sure how to find the area of cross sections. One particular problem had me confused. Here it is,

A sphere w/ radius 5 is cut by a plane 3cm from the top. Find the area of the resulting cross section.
Please someone help me i really need to learn this.
thanks

Answer 1

Find AB, which will be the diameter of the circle formed by the cross section.

Answer 2

but it is a sphere

Answer 3

So what? The dimensions I showed above hold.

Answer 4

ok so i can use Pythagorean method to solve for the radius, correct ?

Answer 5

Correct.

Answer 6

thank you so much!