Question

A hall is 12 m long, 10 m wide and 5 m high. Its wall and

the root are to be white washed from inside. Find the total

area to be whitewashed. Also find its cost at the rate of ₹

5.40 per sq. m.​

Answer 1

Answer:

height = 5m

length = 12m

width = 10 m

Area of 4 walls = 2 ( length + breadth) × height

Area = 2 × ( 12 + 10 ) × 5

Area = 44 × 5 = 220 m ^2

Area of roof = length × width

Area = 12 × 10 = 120 m^2

total area = 220m^2 + 120 m^2

total area = 340m^2

rate = Rs. 5.40 / m^2

now , price = 340 / 5.40 = Rs. 62.96

Step-by-step explanation:

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