Please help I think he is correct but I’m not sure.

Its wrong its C

Step-by-step explanation:

you cant make 416 disappear you have to subtract 416 from both side so you get C

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