Which expression are equivalent to the given expression

Step-by-step explanation:

8√5 = √64×√5

= √320

≠ √80

Not equivalent

= √160

≠ √80

Not equivalent

= √80

Equivalent

4√10 = √16×√10

= √160

≠ √80

Not equivalent

4√5 = √16×√5

= √80

Equivalent

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