what is the surface area of a cone when the radius is 10 and so is the height.

Guest May 27, 2015

#1**+5 **

Given the radius and height, the formula for the surface area of a cone is $${\mathtt{\pi}}$$r[r+(sqrt of h^2+r^2).

h for height, r for radius.

Plugging in the values: we get 10$${\mathtt{\pi}}$$[10+(sqrt200)]

Can you finish it from here?

DarkBlaze347
May 27, 2015

#2**+5 **

S_{area} = ( pi * r) (r + √[r^2 + h^2] ) where r is the radius and h is the height ..... so we have.....

S_{area} = ( pi * 10 ) (10 + √[10^2 + 10^2] ) = (10*pi) *(10 + 10√2) = 758.48 sq units

CPhill
May 27, 2015

#3**+5 **

How do you get the square root sign? I tried looking for it everywhere but never found it.

DarkBlaze347
May 27, 2015