Question

Find the surface area of the cube below.

Answer 1

150 cm²

Explanation:

So, firstly we must understand what does total surface area means (T.S.A)

We intuitively know that, it means,

Area of 6 EQUAL faces.

So,

Edge of the cube = 5 cm

Area of 1 face= 5 × 5= 25 cm²

Area of 6 faces= 25 × 6= 150 cm².

So, that means,

T.S.A= 150 Cm²

Answer 2

150

Explanation:

surface area =6a^2

= 6(5^2)

= 6×25

=150