PLS ASAP IM TIMED) What is the volume of the composite figure? Use 3.14 for Pi. Round to the nearest hundredth. A cylinder and cone. Both have a radius of 4 centimeters. The cone has a height of 8 centimeters and the cylinder has a height of 7 centimeters.

Recall the formulas V = B h and V = one-third B h
242.83 cubic centimeters
309.81 cubic centimeters
334.93 cubic centimeters
485.65 cubic centimeters

A. find the power of the test, when the null hypothesis assumes a population mean of mu = 450, with a population standard deviation of 156, the sample size is 5 and the true mean is 638.47 with confidence intervals of 95 b. find the power of the test, when the null hypothesis assumes a population mean of mu = 644, with a population standard deviation of 174, the sample size is 3 and the true mean is 744.04 with confidence intervals of 95% c. find the power of the test, when the null hypothesis assumes a population mean of mu = 510, with a population standard deviation of 126, the sample size is 10 and the true mean is 529.44 with confidence intervals of 95