SOLUTION: how can i find out the length of the slant height of a cone with a radius of 15 cm ad a surface area of 1884 cm square? thank you

Question 294688: how can i find out the length of the slant height of a cone with a radius of 15 cm ad a surface area of 1884 cm square? thank you
Found 2 solutions by richwmiller, mananth:
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
You asked this less than 10 minutes ago.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
The surface area of right circular cone = pi*r^2 +pi*r*l
The radius =15 cm
area = 1884 sq. cm
1884= pi*(15)^2 + pi*15*l
1884= 15pi(15+l)
1884 /15*pi =15+l
1884/15*pi -15= l
l = 25 cms

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