Question

find the side of a cube whose surface area is
5400 sq. cm

Answer 1

A cube has 6 faces so,5400/6=900sq.cm is the area of one face.thus ,one side=√900=30cm

Answer 2

The side of that cube is 30 m.

Given data :

• Surface area of the given cube = 5400m²

Let,the side of the cube = x m ( Here we assume x as a variable to calculate the numerical value of the one side of the given cube)

• Now,we have to calculate the surface area of the given cube by using the following formula :

6 × (side)²

• Now side of the given cube = x

So,the surface area = 6x² m²

• Now,tha surface area of that cube is also given in the question which we can compare with 6x² to form an equation.

• So,the final equation will be :

6x² = 5400

x² =900

x = 30

The length of the one side of the given cube is 30 m. (Answer)