Write and solve an equation sam's father is 3 times sam's age the sum of their ages is 56 how old is sam's father

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

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.