Question

The perimeter of one of the faces of the cube is 30 cm. Find the lateral surface area of a cube​

Answer 1

Answer:

225 cm^2 --------> lateral surface area of a cube

hope the above ans helps you to complete the problem

Answer 2

Answer:

225 cm²

Step-by-step explanation:

Any one face of a cube is a square and acc. to ques, it's perimeter is 30 cm.

Perimeter of square = 4a where a is it's side

Thus, 4a = 30 cm

∴ a = 30/4 => 7.5 cm

So, one side of the cube is 7.5 cm.

Now, LSA of cube = 4a² (LSA doesn't include the top and base of any shape)

=> 4(7.5)²

=> 4*56.25 => 225 cm² is the LSA of the cube whose perimeter of one of the faces of the cube is 30 cm.