Maths

A person stands in front of a cylindrical water tank and has a viewing angle of 27 degrees to the sides of the tank. What percentage of the circumference of the tank can they see?

1. 0
2. 0
3. 24
1. The central angle subtended by the visible arc is
2*(90-27/2) = 153°
so, they can see 153/360 = 42.5%

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2. 0
posted by Steve

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