Edie can paint a wall in 3 hours. dan can paint the same wall in 6 hours. if they work together, how many hours will it take edie and dan to paint the wall?

a.
1 hour

b.
1.5 hours

c.
2 hours

d.
4.5 hours

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