Which has the same value as 32 tens

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Which of the following is true for the relation f(x)=2x^2+1

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.