What is the difference between arithmetic mean and average?

You are updating your garage and the only thing left to paint is your garage day. you're only going to paint the slide that faces the street. the garage door is 9 fert 8inches tall and 120 inches wide. you need to know the surface area of the side of the garage door to determine how much paint to buy. the hardware store sells paint by how much covers a square foot. what is the surface area you should report to the hardware store what is the answer

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2