Question

The surface area of a cone is given by the formula s=3.14l+3.14r2 solve for the formula for l

Answer 1

Hello from MrBillDoesMath!

Answer:

l = s/3.14 - r^2

Discussion:  

s = 3.14 l + 3.14 r^2        =>  divide both sides by 3.14

s/3.14 = l + r^2               => subtract r^2 from both sides

(s/3.14) - r^2 = l

Thank you,

MrB