Dustin has three lengths of rope: 3/4 yard long, 2/3 yard long, and 7/10 yard long. he needs at least 1 yard of rope. which two pieces of rope together will be at least 1 yard in length and have the smallest amount left over?

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