Given a sphere with radius r, the formula 4ttr2 gives . A. the volume
B. the surface area
C. the radius
D. the cross-sectional area​

Which matrix multiplication is possible?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30