KnowledgeBoat Logo
|

Mathematics

If the perimeter of one face of a cube is 40 cm, then the sum of lengths of its edge is

  1. 80 cm

  2. 120 cm

  3. 160 cm

  4. 240 cm

Mensuration

10 Likes

Answer

Each face of cube is a square. Let length of each side = x cm.

Given, perimeter = 40 cm.

∴ 4x = 40 cm

⇒ x = 10 cm.

There are 12 edges in a cube.

Sum of edges = 12 × 10 = 120 cm.

Hence, Option 2 is the correct option.

Answered By

2 Likes


Related Questions