Question

find the area of triangle whose sides are 3.5 CM 4.5 cm and 6 CM.​

Answer 1

Answer:

$a = 3.5cm \\ b = 4.5cm \\ c = 6 cm\\s = \frac{a + b + c}{2} = \frac{14}{2 } = 7cm \\ to \: find \: area \: of \: triangle \: we \: have \: herons \: formula \\ \sqrt{s(s - a)(s - b)(s - c)} \\ \sqrt{7(7 - 3.5)(7 - 4.5)(7 - 6)} \\ \sqrt{7(3.5)(2.5)(1)} \\ \sqrt{61.25} \\ 7.83 {cm}^{2} (approx)$