What is the surface are of a colonial grain storage tank that has a height of 54 meters and a diameter of 18 meters? 1802m^2, 1781m^2, 3110m^2, 1548m^2.. thanks
Answers
Only authorized users can leave an answer!
Can't find the answer?
If you are not satisfied with the answer or you can’t find one, then try to use the search above or find similar answers below.
Find similar answersMore questions
Answered by Matheng
The tank has the shape of a cone So, the area of the cone = π r²+ π r s where r is the radius s is the slant height = √(r²+h²) h is the height given the diameter = 18 m and the height = 54 m ∴ r = 9 m , h = 54 m ∴ s = √(r²+h²) = √(9² + 54²) = 54.745 m ∴ Area = π r²+ π r s = π * 9² + π * 9 * 54.745 ≈ 1802.3 m² The correct answer is the first option 1802 m²