Question

Find the area of four walls of a cube whose one edge is 5/2m.

Answer 1

Area =4a^{2}
=4x (2.5) ^2
= 4x 6.25
=25cm ^ {2}

Answer 2

area of one wall will be
side × side
=5/2 × 5/2
=25/4
Area of four wall
= 4×25/4
= 25 m^2