Question

Please it's urgent. ...pls do it step wise by heron's formula...... do it full. ...

Answer 1

$let \: the \: perimeter \: of \: ratio \: be \: x \\ a = 10x \\ b = 9x \\ c = 8x \\ a + b + c = 540 \\ 10x + 9x + 8x = 540 \\ 27x = 540 \\ x = 540 \div 27 \\ x = 20 \\ the \: longest \: no. \: is \: 10x \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 10 \times 20 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 200 \: answer$

Answer 2

Hope it helps you ......