a hall is 150 m long 25 mwide and it's height is 6 metre find the cost of whitewashing it's 4 walls and roof at the rate of 20 per square metre
Answers
Answer:
Rs367.5
Step-by-step explanation:
Answer:
The cost of whitewashing is 117000 Rs
Step-by-step explanation:
Given : Hall size = length L = 150 m, width = W = 25 m and height =H = 6 m
Rate of white washing = 20 Rs per square units
cost of 4 walls and roof = ?
Solution : Area of 4 walls = 2 x H x ( L+ W)
= 2 x 6 x (150+25)
= 12 x 175
= 2100 sq. M
Area of roof = Length x width
= 150 x 25
= 3750 sq. M
Total area to be white washed = Area of 4 walls + area of roof
= 2100 + 3750
= 5850 sq.M
The cost of whitewashing = total area x rate of whitewashing
= 5850 x 20
= 117000 Rs