Question

A cylindrical tank of diameter 4m contains water to a height of 3 m.What area of the surface is wet?
any idea please

Answer 1

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.

Answer 2

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

Answer 3

ok - you are right. So add the area of the base.

Geez...

Answer 4

Answer