Question

The slant height, l, of a cone with a surface area of 500π ft2 and a radius of 15 ft.

l =
ft

Answer 1

275 ft

Step-by-step explanation: correct of edge2020

Answer 2

Surface area = πr(r + l)
500π = 15π(15 + l)
100 = 3(15 + l)
100=45+3l
100-45=3l
55=3l
l=55/3
l=18.3ft to one decimal place