The volume of a cube is 64 cm³. Its surface area is
(a) 16 cm²
(b) 64 cm²
(c) 96 cm²
(d) 128 cm²

Solution:

The volume of a cube of side ‘s’ = s³

The given volume is 64cm³, hence

s³ = 64

s³ = 4 × 4 × 4

s = 4

Surface area of a cube = 6s²

Surface area of cube = 6(4)² = 6 ×16 = 96cm²

Answer is (c )

✦ Try This: The volume of a cube is 216 cm³. Its surface area(a) 16 cm², (b) 64 cm², (c) 96 cm², (d) 216 cm²

The volume of a cube of side ‘s’ = s³

The given volume is 216 cm³, hence

s³ = 216

s³ = 6 × 6 × 6

s = 6

Surface area of a cube = 6s²

Surface area of cube = 6(6)² = 6 × 36 = 216 cm²

Answer is (d)

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

NCERT Exemplar Class 8 Maths Chapter 11 Problem 11

The volume of a cube is 64 cm³. Its surface area is (a) 16 cm² (b) 64 cm² (c) 96 cm² (d) 128 cm²

Summary:

The volume of a cube is 64 cm³. Its surface area is 96cm²

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