Question

Find the cost of painting a house of length 160 m and breadth 120 m at the rate of $ 5 per sq. m. ( A ) 3,840(B)2,800 ( C ) 3,440(D)2,460

Answer 1

160*120=19200 sq.m
So 1 sq.m = 5$
The cost is 3840 $
Answer A

Answer 2

Answer: Opt.A) $ 3,840

Step by step explanation:

To find: cost of Painting the wall

We know that,

Area of wall = length × breadth

Here, Given that, length = 160 m and breadth = 120 m.

= 160 × 120 m².

= 19200 m².

Therefore, cost of Painting the wall = area × cost per square unit.

Given that, rate = $ 5 per sq. m.

= 19200 × 5

= $ 3840

Thus, Answer: Opt.A) $ 3,840