The length of each side of a cube is multiplied by 3. what is the change in surface area of the cube?
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3
the answer is 6*9xsquare
anamel:
Can u explain briefly
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16
Let the length of each side of the cube be'l' m.
Thus the surface area = 6l^2
Now the length when made three times
L = 3l
Thus the new surface area= 6*(3l)^2= 6*9l^2
= 54 l^2
Thus the change in the surface area= 54l^2 - 6l^2 = 48l^2.
Thus the surface area = 6l^2
Now the length when made three times
L = 3l
Thus the new surface area= 6*(3l)^2= 6*9l^2
= 54 l^2
Thus the change in the surface area= 54l^2 - 6l^2 = 48l^2.
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