The area of one of the faces of a cube is 81 square cm. Volume of cube?
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Answer:
729 cube cm is the volume of the cube.
Step-by-step explanation:
because ,area of square = side×side or side square.
81 square cm = side square
root 81 square cm = side (as square goes left hand
root 9cm×9cm = side side and becomes root)
9cm = side(one pair of nine comes out
and that is side)
now , volume of square = l×b×h (in case of square all side
are same)
= 9cm×9cm×9cm
= 729cm
hope this helps
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