Question

What is the approximate surface area of the larger cone?
Answer 817.8 square yards
467.5 square yards
267.1 square yards
152.7 square yards

Answer 1

I got 817

Answer 2

radius of larger cone = 21x5/12 = 8.75
curve surface area = (pi) r l = (pi) (8.75)(21) = 577.2677
total surface area = curved area + based area = 577.2677 + (pi)r^2 = 577.2677 + (pi)(8.75)^2 = 817.8

Answer 3

Thanks! could you also look at my other question.. I will give you a link

Answer 4

sure! you're welcome :)

Answer 5

http://openstudy.com/study#/updates/4f635a67e4b079c5c631b7f2