Find the surface area of a conical grain storage tank that has a height of 30 meters and a of 16 meters. Round the answer to the nearest square meter.
Options:
2365 m squared
1762 m squared
981 m squared
780 m squared
2 answers
16 is the diameter
r base = 8
slant height = sqrt (8^2 + 30^2) = sqrt (964) = 31.05
area (not including base) = pi r L = 3.14 * 8 * 31.05
= 780
if you include the base pi r^2 = 64 pi = 201
201 + 780 = 981
I do not know which you want. Probably just the sides because that is what you have to build out of metal.
slant height = sqrt (8^2 + 30^2) = sqrt (964) = 31.05
area (not including base) = pi r L = 3.14 * 8 * 31.05
= 780
if you include the base pi r^2 = 64 pi = 201
201 + 780 = 981
I do not know which you want. Probably just the sides because that is what you have to build out of metal.
2 answers