Question

if the surface area of a cube is 486 cm find its volume

Answer 1

total surface area = 486

6a^2 =486

a^2 = 486/6

a^2 = 81

a = 9


volume = side × side × side

9 ×9×9

729cm^3




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Answer 2

surface area of cube is 6a^2
=>6a^2=486
=>a^2=81
=>a=9
Volume of the cube =a^3
=9^3
=729