What is the volume of a cylinder, in cubic feet, with a height of 13 feet and a base diameter of 4 feet?

What is the solution of log2  (3x  -  7)  =  3? 4 5

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g