The volume of a cube whose edge is 3x is
(a) 27x³
(b) 9x³
(c) 6x³
(d) 3x³

Solution:

If the edge of a cube is ‘s’ then the volume of the cube is

Volume of cube = s³

If s = 3x,

Volume of the cube = (3x)³ = 27x³

The answer is choice (a)

✦ Try This: The volume of a cube whose edge is 2x is (a)16x³, (b) 8x³, (c) 6x³, (d) 2x³

If the edge of a cube is ‘s’ then the volume of the cube is

Volume of cube = s³

If s = 2x,

Volume of the cube = (2x)³ = 8x³

The answer is choice (b)

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 11

NCERT Exemplar Class 8 Maths Chapter 11 Problem 15

The volume of a cube whose edge is 3x is (a) 27x³ (b) 9x³ (c) 6x³ (d) 3x³

Summary:

The volume of a cube whose edge is 3x is 27x³

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