Choose all questions that are true a. 4+9=6+7 b. 12-8=1+3 c. 15-8=5+3 d. 9-2=16-9 e. 6+5=18-9

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