Question

Three sides of a triangular field are of lengths 10 m, 20 m and 15 m respectively. Find the cost of fencing the field at the rate of Rs 25 per m.

Answer 1

`\huge{\fbox{\fbox{Given:}}}`

Lengths of the three sides of triangle are 10m,20m and 15m.

Length of the fence =

Perimeter of the ∆

`(10 + 20 + 15)m \\ = 45m`

`\large{\fbox{\gray{Cost \: of \: fencing \: the \: field=}}}`

`45 * 25 = Rs1125`

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Answer 2

Explanation:

Length of fence = Perimeter of triangle

= 10 + 20 + 15

Length of the fence = 45 m

Cost of fencing per meter = Rs. 25

Cost of fencing 45 m = 25 * 45

= Rs. 1125