Question

Area of whole surface of a cube is 216sq. cm, then the volume of the cube is

a) 343 cu.cm.
(b) 216 cu.cm
c)121 cu.cm.
(d) 225 cu.cm.​

Answer 1

Answer:

surface of a cube = 6a^2

216 = 6a^2

216/6 =a^2

a^2 = 36

a = 6 cm

volume of the cube = a^3

= (6)^3

= 216

Answer 2

Answer:

Total surface area of cube = 216 cm²

. i.e., 6a² = 216

a² = 216/6 = 36

a = √36 = 6cm

Volume of cube = a³

= 6 × 6 × 6 = 216 cm³

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