Question

A hall has four walls, each measuring 11.5 m × 7.2 m. It has two doors of height 2 m and
width 1 m. It also has three windows of size 1 m x 0.5 m. Find the cost of whitewashing
the walls at the rate of 65 per square metre.​

Answer 1

Answer:

Let the doors and windows be on one side out of the four walls...

Let dimensions of walls be l*b, dimensions of doors be L*B and dimensions of windows be l1*b1

Then we have that

Cost = area*rate

Therefore cost = 3(l*b) + (l*b-2L*B-3l1*b1) whole multiplied by the given rate

Calculate further and your anser will come

Step-by-step explanation:

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