What is the surface area of a conical grain storage tank that has a height of 43 meters and a diameter of 14 meters? Round the answer to the nearest square mete
Mathematics
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Question
What is the surface area of a conical grain storage tank that has a height of 43 meters and a diameter of 14 meters? Round the answer to the nearest square meter.
A. 1,100 square meters
B. 1,112 square meters
C. 2,507 square meters
D. 2,605 square meters
A. 1,100 square meters
B. 1,112 square meters
C. 2,507 square meters
D. 2,605 square meters
1 Answer

1. User Answers calculista
we know that
[surface area of the cone]=pi*r²+pi*r*l
where
r is the radius
l is the slant height
l²=h²+r²
h=43 m
r=14/2> 7 m
l²=43²+7²> l²=1898> l=43.57 m
[surface area of the cone]=pi*7²+pi*7*43.57> 1111.53 m²> 1112 m²
the answer is the option
B. 1,112 square meters