The monthly dues for a premium membership is $15 more than the cost of a standard membership. the premium membership cost $40 per month. what is the cost of the standard membership?

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

the first one, all those points on the line just make a strait line.