the total surface area of a cube is 486 cm². find the volume of the cube.
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Answered by
1
Step-by-step explanation:
TSA of cube = 6a^2
486 = 6a^2
486/6 = a^2
a = 9
so, side of cube = 9cm
Volume of cube = a^3
=9^3
=729 cm^3
Answered by
27
Answer:
Total surface area of cube = 6 × side²
=> 6 × side² = 486 cm²
=> side² = 486/6
=> side² = 81
=> side = √81
=> side = √(9 × 9)
=> 9 cm
Volume of cube = side³
=> 9 ³
=> 729 cm³
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