Question

Find the cost of digging à cuboidal pit 7m long, 5m broad and 3m dep at the rate of 30 per m'.​

Answer 1

Answer:

3150rs

Step-by-step explanation:

length=7m

breadth=5m

height-3m

volume of cuboid -lbh

=7*5*3

=105m3

cost of digging the pit= cost of 1 m3 *total m3

=30*105

=3150 rs

Answer 2

l=8 m, b=6 m, h=3 m

Volume =l×b×h=(8×6×2)m  

3

=144m  

3

 

Cost of digging per m  

3

 volume =Rs.30

Cost of digging per 144m  

3

 volume =Rs.144×30

= Rs. 4320