Question

(1) Find the total surface area of the cubes whose sides are:

(i) 4.6 cm
(ii) 7.7 cm
(iii) 9.6 cm
(iv) 0.13 cm

Answer 1

(i) Side of the cube = 4.6 cm
Total surface area of the cube = 6 × (side)²
= 6 × (4.6)² cm²
= 126.96 cm²

(ii) Side of the cube = 7.7 m
Total surface area of the cube = 6 × (side)²
= 6 × (7.7)² m²
= 355.74 m²

(iii) Side of the cube = 9.6 cm
Total surface area of the cube = 6 × (side)²
= 6 × (9.6)² cm²
= 552.96 cm²

(iv) Side of the cube = 0.13 cm
Total surface area of the cube = 6 × (side)²
= 6 × (0.13)² cm²
= 0.1014 cm²