Question

A room is 12 m long and 8 m broad. Find the cost of white washing its ceilling at ₹ 40.50 per sq. m.

Answer 1

Find the area of the ceiling:

Area = Length x Breadth

Area = 12 x 8 = 96 m²

Find the cost of white washing the ceiling:

Given that it cost Rs 40.50 per square metre

⇒ 1 m² = $40.50

⇒ 96 m² = 40.50 x 96 = Rs 3888

Answer: The cost of white washing the ceiling is Rs 3888

Answer 2

Area of room=Area of ceiling =12m×8m=92sq.m.
White washing per sq.m.=Rs40.50
White washing 92sq.m.=Rs(40.50×92) =Rs102600