The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and ceiling at the rate of Rs 750 per m2

Given,

Length of room (l) = 5 m

Breadth of room (b) = 4 m

Height of room (h) = 3 m

Area of walls + Area of ceiling = lb + 2lh + 2bh

= (5 x 4 + 2 x 5 x 3 + 2 x 4 x 3) m2

= (20 + 30 + 24) m2

We get,

= 74 m2

Hence,

Cost of white wash per 1 m2 = 7.50 rupees

Cost of white wash per 74 m2 = (74 x 7.50) rupees = 555 rupees

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