Question

12. The sides of a triangular field are 975 m, 1050 m and 1125 m. Find the perimeter of the
field. Also, find the cost of fencing the triangular field at the rate of 10 per metre.
13. The perimeter of a triangle is 50 cm. If two of its sides are 15 cm and 20 cm, find the length
of the third side?
14. The perimeter of an isosceles triangle is 42 cm. Its base is
Find the length of each side of the triangle.
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Answer 1

Answer:

12) perimeter=3,150

13),15

Answer 2

Step-by-step explanation:

12. perimeter = sum of all sides

= 975+1050+1125

= 3150m

cost of fencing = 3150×10

₹31500

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13. let the third side be x

P=50cm

15+20+x=50

35+x=50

×= 50-35

x =15cm

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14. question is incomplete

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