Question

A cone has a radius of 12 inches and a surface area of 1050 square inches. find the slant height of the cone to the nearest tenth of an inch. can you also explain the steps?

Answer 1

Surface area -> convert to height using radius given. Then, use right triangle properties to find slant height (hypotenuse).

Answer 2

http://0.tqn.com/d/math/1/0/t/L/conerr.jpg
1050 = pi*r*x+pi*r^2
1050 = pi*12*x + pi*144

Answer 3

12pix = 1050-144pi

Answer 4

x = (1050-144pi)/(12pi)

Answer 5

just calculate that and round

Answer 6

thanks so much more help than my online teacher lol