Question

5. The volume of cube is 729cm. Find its diagonal.​

Answer 1

Answer: 9√3

Step-by-step explanation:

Let the side of the cube = s

Volume of a cube = s³

→ s³ = 729 cm³

→ s = 9 cm

We know that the diagonal of a cube= √(3s²)

⇒ s√3

The diagonal of the cube will be 9√3.

Answer 2

Answer:

length of diagonal = a√3

here,

a^3 =729:cm^3

a^3= 9^3 cm^3

a=9 cm

length of diagonal =) a√3 =9×√3

486 cm