Question

Question 7

1 pts
Dan has a conical lamp shade with an altitude of 6 inches and a diameter of 12
inches. How much material is needed to make the lampshade?
6 in.
1
--12 in.

Answer 1

To solve take circumference of the lamp shade( 2pi(r) or pi(d) ) so circumference is 12pi.
Then multiple by hight or altitude to get surface area ( circumference x height)
SA =72pi or ~226.19 in^2

If you are putting material on the top of lamp to, add pi(r)^2 or 36pi= ~113.10 in^2