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Strike441 [17]
3 years ago
13

A cube has a area of 81cm squared find its volume​

Mathematics
2 answers:
vladimir1956 [14]3 years ago
4 0

Answer:

Area of one face of a cube = 81 sq cm.

Hence, each side of the cube = 81^0.5 = 9 cm.

So volume of the cube = 9^3 = 729 cm^3

Step-by-step explanation:

Alik [6]3 years ago
4 0

Step-by-step explanation:

Area of face of a cube = 81 cm squared

So area of face = a x a = 81

A^2 = 81

A= 9

So side = 9cm

So volume of a cube = side x side x side = side ^3

= 9x 9 x9 = 729

So Volume = 729 cm^3

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