ARE THESE SIMILAR? FIRST CORRECT ANSWER GETS BRAINLIEST ANSWER

What is the volume of the sphere shown below with a radius of 3?

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat

What is the following sum in simplest form? square root 8 + 3 square root 2 + square root 32