Asked by kelvin

A cylindrical tank of diameter 4m contains water to a height of 3 m.What area of the surface is wet?
any idea please
Answered by Steve
assuming you mean surface of the tank, then that would be the same as the surface area of a 3m-high cylinder of water.

So, just use your formula for the lateral surface area of a cylinder.
Answered by kelvin
so the water will not wet one of the base area of the cylinder since you said lateral area and the formula is 2*pie*r*h
Answered by Steve
ok - you are right. So add the area of the base.

Geez...
Answered by Jimmy
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