Question

A liquid filter shaped as a right circular cone is shown below.



If a similar cone has a slant height of 24 cm, what is its lateral area?

120π cm2

144π cm2

256π cm2

72π cm2

Answer 1

Lateral surface area of a cone is pi*r*l ...
'r' is the radius of the circular base, 'l' the slant height... :-)

Answer 2

if you plug it in you get 376.8 which isnt an option

Answer 3

nevermind i got it i feel really dumb

Answer 4

You forgot to retain "pi"... Also check that u took l=24 , not l=20...

Answer 5

Happens with everyone... never feel guilty for these small things :-)

Answer 6

thank you :)

Answer 7

Pleasure :-)