Celina is buying fabric scraps to make koozies for her glasses. Each glass is cylindrical with a diameter of 4 inches and a height of 6 inches. The koozies will cover only the sides of the glasses. What is the amount of fabric she will use? What does this amount represent? Use three point one four for pi. Show your work.

Question

anonymous · Answer

You just need to find the surface area of a cylinder and subtract the base and top. 
2*3.14*2^2+2*3.14*6 = 62.8. Surface area of one glass
62.8-25.12 = 37.68 Surface area of only the sides of a glass
She will use 37.68 units of fabric to make one koozie.
This amount represents the amount of fabric she will need to make one koozie