Question

b) The diagonal of a cube is 9V3 cm long. Its total surface area is i) 243c cm2 ii) 468 cm 2 iii) 324 cm² iv) 648 cm² v) none of these ​

Answer 1

Answer:

b) 486 cm²

Step-by-step explanation:

If diagonal = 9√3

then side = 9 cm

Total Surface Area = 6a²

= 6 × 9²

= 6 × 81

= 486 cm²

Answer 2

Diagonal of the cube = 9√3 CM

so, side = 9√3 / √3= 9CM

Surface Area Formula= 6a^2

= 6(9)^2 = 6*81 cm^2

= 486cm^2