Question

find the cost of painting a square of side 40 cm at 10 paise per cm2​

Answer 1

Area of a square : side x side
So, side = 40cm
Therefore , area = 40 x 40
Area = 1600cm2

Therefore,
Cost for cm2 : 10 paise
1 rupee = 100 paise
So, paise to rupee

= 10/100
=0.1 rupee

Therefore,
Total cost required = 1600 x 0.1
Therefore total cost = 160 rupees

Hope this helps you!!!