Question

solve ... heron's formula​

Answer 1

$\sf{s = \frac{a + b + c}{2} = \frac{20 + 20 + 20}{2} = \frac{60}{2} \implies \: 30} \\ \\ \sf \blue{area \: of \: \triangle = \sqrt{s(s - a)(s - b)(s - c)} } \\ \sf{ = \sqrt{30(30 - 20)(30 - 20)(30 - 20)} }\\ \\ \sf{ = 30 \times 10 \times 10 \times 10} \\ \sf{ = 10 \times 10 \sqrt{3} } \\ \therefore \sf \red{100 \sqrt{3 \: {m}^{2} } }$

Answer 2

Answer:

100 sqrt 3m²

Step-by-step explanation:

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