use area
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to find the surface area you have to first find the area of each part then add the areas together.
you need to work backward for find the radius from the volume then work forward and find the surface area. The volume is 36 Pi cm3 The formula for the volume inside of a sphere is 4/3 Pi x radius3 so 36xPi=4/3 Pi x radius3 So 108/4=the radius3 so 27 is the radius cubed hence 3 is the radius. This tells us the surface area is 4xPix32 =36Pi cm squared. So in the surface area is also 36 but the units are square cm.
The spherical shape is the smallest surface area for a given volume. This comes about naturally when a surface under pure surface tension contains a fluid volume.
to find the surface area of the triangle we just need to multiply the length with breath. area=lengthXbreadth
You find the surface area of each of its six faces and add them together.