Question

A room is 40m long ,30m broad and 10m high.Find the cost of whitewashing itd four walls and ceiling at rupees 20 per sq m

Answer 1

Answer:

Answer is in attachment

Answer 2

The cost of whitewashing its four walls and ceiling at rupees 20 per sq m is rs.52000

Step-by-step explanation:

Length of room = 40 m

Breadth of room = 30 m

Height of room = 10 m

Area of 4 walls+ceiling = $2(l+b)h+lb=2(40+30)(10)+40 \times 30=2600 m^2$

Cost of 1 sq.m. = Rs.20

Cost of 2600 sq.m. =$20 \times 2600=Rs.52000$

Hence the cost of whitewashing its four walls and ceiling at rupees 20 per sq m is rs.52000

#Learn more:

A godown is 50m long ,40m broad and 10m high. Find the cost if whitewashing its four walls and ceiling at â¹20 per square meter

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