Question

8. Find the cost of fencing a triangular field with each side 20.5 m long, at the rate of 25 per
metre.
9. Find the cost of fencing a rectangular park of length 300 m and breadth 200 m at the rate of
rs20 per metre​

Answer 1

Answer:

8. 61.5 × 25 = 1537.5

9. 20,000

Answer 2

Answer:

8.) 1537.5 Rupees

9.)20000 Rupees

Step-by-step explanation:

8. ) Side = 20.5

20.5x 3 = perimeter

61.5 = perimeter

Cost= 61.5x25 = 1537.5

9.)Perimeter = 2x(l+b)

2x(300+200) = 2x 500

= 1000 m

Cost= 1000x20

=20000 Rupees

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