Question

Mel is making a paper tepee, as shown below. hat is the area of the paper required to make the lateral surface of the tepee?

Answer 1

What is the area

Answer 2

radius = 6, so circumference of the base = 12pi.
the circumference of the whole big circle to make the hat is 32pi.
now the ratio of 12pi/(32pi) is the fraction of the area needed to make the hat.
12pi/32pi = 3/8.
So take 3/8 the area of the circle whose radius is the slant height of the hat.