Question

4
11. The cost of ploughing a
square plot at the rate of rs.7
per square metre is rs.1008.
The cost of fencing its
boundary at the rate of rs.5
per metre is how much?[type
the working and the final
solution]​

Answer 1

Answer: 240 rs.

Step-by-step explanation:

1. area of plot = total rate for ploughing/ rate of per square plat = 1008/7= 144 square metre
2. area of square plot = (side * side)= 144 square metre
3. so side will be $\sqrt{144}$ = 12 metre
4. now length of fencing its boundary = perimeter of the plot = (4* side)
5. 4* 12= 48 metres
6. cost of fencing = rs. 5/metre
7. complete cost of fencing its boundary will be = (perimeter of plot * rate per metre) = 48 *5 = 240 rs.

Answer 2

Answer:

area of plot = total rate for ploughing/ rate of per square plat = 1008/7= 144 square metre

area of square plot = (side * side)= 144 square metre

so side will be \sqrt{144}144 = 12 metre

now length of fencing its boundary = perimeter of the plot = (4* side)

4* 12= 48 metres

cost of fencing = rs. 5/metre

complete cost of fencing its boundary will be = (perimeter of plot * rate per metre) = 48 *5 = 240 rs