A restaurant hall is 20 metre long, 15 metre wide and 10 metre high. The interior of the hall except the ceiling and the base has to be covered with a bright wall paper. What will be the total expenditure if the wallpaper costs Rs. 60 per square metre?
Answers
Answer:
cost is ₹42000.00
Step-by-step explanation:
Dimensions of the hall as given are = length x breadth x Height = 20 * 15 * 10
Total cost = cost per sq. meter * Surface area of the walls in sq. m
= 60 * (LH + BH + LH+ BH) = 60 * (2LH + 2BH)
= 60*2*H(L + B) = 120 * H(L + B)
= 120 * 10 * (20 + 15) = 1200*35 = 42000
Therefore, total cost is ₹42000.00
Given:
Length = 20 m
Breadth = 15 m
Height = 10 m
To find:
Total costing to cover the walls.
Solution:
1) Only the walls of the rectangular hall are included when you covered it by the wallpaper, So;
* The area of the hall to be covered = 2H(L+B)
= 2× 10(20+15)
= 2 ×10 × 35
= 700 m²
2) Rate of covering the wall is ₹ 60 / m²
* Total expenditure = Area×rate
= 700 × 60
= ₹42000