Room is 6.2 m long, 3.8 m wide and 3.2 m high. It has 2 doors each 2 m

1.	Room is 6.2 m long, 3.8 m wide and 3.2 m high. It has 2 doors each 2 m 1.2 m and 2 windowseach 12 m*15 m Find the cost of white-washing its walls at the rate of rupee 10 per square metre.
Answer» Answer: 556 RS. /10m² Step-by-step EXPLANATION: Given:LENGTH (L)=6.2m Height (H)=3.2m Width (b)=3.8m ∴ Area of four walls =2(l+b)h=2(6.2+3.8)×3.2=64m 2 Given that the has 2 doors each 2m×1.2m and 2 windows each 1.2m×1.5m. Area of 2 doors =2×(2×1.2)=4.8m 2 Area of 2 windows =2×(1.2×1.5)=3.6m 2 ∴ total area to be white-washed = area of four walls - (area of doors + area of window) ∴ total area to be washed =64−(4.8+3.6)m 2 =64−8.4=55.6m 2 Given that the cost of white-washing its walls at the rate of Rs.10 per square metre. ∴ The rate of white-washing 55.6m 2 area =55.6×10=Rs.556 Hence, the correct answer is 556.

Room is 6.2 m long, 3.8 m wide and 3.2 m high. It has 2 doors each 2 m 1.2 m and 2 windowseach 12 m*15 m Find the cost of white-washing its walls at the rate of rupee 10 per square metre.

Answer»

Answer:

556 RS. /10m²

Step-by-step EXPLANATION:

Given:LENGTH (L)=6.2m

Height (H)=3.2m

Width (b)=3.8m

∴ Area of four walls =2(l+b)h=2(6.2+3.8)×3.2=64m

Given that the has 2 doors each 2m×1.2m and 2 windows each 1.2m×1.5m.

Area of 2 doors =2×(2×1.2)=4.8m

Area of 2 windows =2×(1.2×1.5)=3.6m

∴ total area to be white-washed = area of four walls - (area of doors + area of window)

∴ total area to be washed =64−(4.8+3.6)m

=64−8.4=55.6m

Given that the cost of white-washing its walls at the rate of Rs.10 per square metre.

∴ The rate of white-washing 55.6m

area =55.6×10=Rs.556

Hence, the correct answer is 556.