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How do you find the volume of a cylinder with a hole?
if you mean a cylinder with a hole through it like a pipe or tube, then it's pi x (Od2 - id2)/4 x h Od = outer diameter id = inner diameter
How do you finde a perimeter of a square inside a square knowing the perimeter of the outer square?
There must be some distances given between the outer square and the inner square... We'll then decrease the differences from the side of the outer square in order to get the side of the inner square. Thus, we can find the perimeter of the inner square as well.
How do you find the area of a compact disc?
Suppose the diameter of the disk is D cm so that the radius is D/2 = R cm. Suppose the diameter of the hole is d cm so that its radius is d/2 = r cm. Then the area of one side of te disc is pi*(R^2 - r^2) Therefore the total area of the two sides is 2*pi*(R^2 - r^2) square cm. This ignores the surface area of the edge which, although small, is not 0.
How do you find the radias of a circle?
The radius is the distance from the center to the outer edge of the circle. You can measure the diameter, the distance from side to side, and divide by 2.
How can you use radius to find the diameter?
you double the radius to find the diameter.
