the average human hair measures about 90 micrometers wide which is 0.00009 correctly represent this in scientific notation

90 micrometers / 1,000,000 = 0.00009  meters =

9 x 10^-5 meters

Step-by-step explanation:

45 minutes

step-by-step explanation:

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