You need the area to find the volume of an object.
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The surface-area-to-volume ratio may be calculated as follows: -- Find the surface area of the shape. -- Find the volume of the shape. -- Divide the surface area by the volume. The quotient is the surface-area-to-volume ratio.
1) Calculate the area 2) Calculate the volume 3) Divide the area by the volume to get the ratio
area is 2, volume is 3
finding the volume of a cone
You measure or calculate the surface area; you measure or calculate the volume and then you divide the first by the second. The surface areas and volumes will, obviously, depend on the shape.