Question

A door of length 2m and bradth 1.5m is on wall.the length of the wall is 4.5 m and breadth is 3.6m find the cost of white washing the wall at the rate of Rs. 20 per m
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Answer 1

Answer:

₹264

Step-by-step explanation:

Here,

length of door = 2 m

breadth of door = 1.5 m

Area of door = length × breadth

= 2 × 1.5

= 3 m²

Now,

length of wall = 4.5 m

breadth of wall = 3.6 m

Area of wall = length × breadth

= 4.5 × 3.6

= 16.2 m²

And,

Area of wall for white washing

= (area of whole wall) - (area of door)

= 16.2 - 3 m²

= 13.2 m²

Now,

Cost of white washing = ₹20 per m²

= 13.2 × 20

= ₹264