Question

7. A field is 225 m long and 175 m wide. It has two roads, in its centre, of uniform width of 5 m, one parallel to
its length and other parallel to its breadth. Find the cost of gravelling the roads at 3 per square metre.​

Answer 1

Answer:

Answer

Analyse the problem.

We see that the total road to be levelled= horizontal road+vertical road-the common portion to both.

Area of horizontal road= 225m×5m=1125m *2

Area of vertical road=175m×5m=875m*2

Area of common portion: 5m×5m=25m*2

Thus total area:(1125+875−25)m*2

=1975m*2

Rate: Rs.3 per m*2

So, total cost=1975m*2

×Rs.3 per m*2

=Rs.5925

Step-by-step explanation:

( *) indicates square

Answer 2

Answer:

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