Ex 13.5 , 4
Find the cost of digging a cuboidal pit 8 m long, 6 m broad and 3 m deep at the rate of Rs 30 per m3.
Here, π = 8 m, b = 6 m and h = 3 m
Volume of the cuboidal pit = ππβ
= (8Γ6Γ3) π3
= 144 m3
Cost of digging 1 m3 = Rs 30
Cost of digging 144 m3 = Rs (144 Γ30)
= Rs 4320
β΄ Cost of digging the pit is Rs 4320

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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