Donald has nine one-day passes to dizzyworld. he can go alone and use one, or he can take a friend and use two. if he visits every day until he uses all the passes, in how many different ways can he use them? using a two day for four days and then going alone at the end (2,2,2,2,1) is different from reversing the order (1,2,2,2,2). i don't know the answer to this question.

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