Question

find the cost of digging a 3m wide strip along the border of rectangular from measuring 30m by 25m at Rs 5per.

Answer 1

Cost =volume of cuboid×rate
=3×30×25×5
=Rs.11,250
Hope it helps you

Answer 2

Given that length of rectangle is 30 metre and

25m breath since area of rectangle is equals to length into breadth that employs 25 m into 30 M that is 750 m . As we have to find the cost of digging a 3 metre wide strip along the border at rupees 5 per metre therefore we do multiplication of 3 by 750 and the answer will be 2200. The cost of digging is 5 into area that is 750 into 5 that is 3750 rupees.
The final answer is rupees 3750