Question

A godown is 60 m long, 40m broad and 10m high. find the cost of whitewashing its four walls and roof at ₹92.50 per square metre. [ Mensuration]
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Answer 1

Answer:

₹185000

Step-by-step explanation:

Lateral surface area of cuboid

= Area of four walls

= 2h(l+b)

= 2×10(60+40)

= 20×100 = 2,000m²

Cost of whitewashing = 2000×92.50

= ₹185000

Answer 2

Answer:

length of the godown=60 m

breadth of the Godowm=40 m

height of the Godown = 10 m

surface area of godown=2(lb+bh+hl)

=2 (60.40+40.10+10.60)

=2 (2400+400+600)

=2 (3400)

=6800sqm

cost of whitewashing per m = Rs92.50 sqm

cost of whitewashing the godown =6800×92.50

=Rs692000