Tim has 4 bins of cars. Each bin has 10 cars. How many cars are there in his bin? Skip counting problem.

40

Step-by-step explanation:

by my calculations let four bins of cars=4x

10 cars =4*10

40

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