Question

plz answer my question fast without any wrong answer with all the steps​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

$sides \: are \: : - \: \: 50m \: \: (a) \\ : - \: \: 65m \: \: (b) \\ : - \: \: 65m \: \: (c) \\ perimeter = 180 \\ s = \frac{180}{2} \\ = 9 0\\ by \: herons \: formula \\ area = \sqrt{s(s - a)(s - b)(s - c)} \\ = \sqrt{90(90 - 50)(9 0 - 65)(90 - 65)} \\ = \sqrt{90(40)(25)(25)} \\ = \sqrt{2250000} \\ = 1500 {m}^{2} \\ cost \: of \: per \: {meter}^{2} = 7 \\ cost \: of \: 1500 \: {meter}^{2} = 1500 \times 7 \\ = 10500 \: rupee$

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