Question

plz answer correctly​

Answer 1

E

$\large\boxed{\fcolorbox{blue}{yellow}{Method \: Explanation \: }} = > \\ \\ sides \: \: ratio \: \: = \: 3 : 5 : 7 \\ \\ and \: \: perimeter \: \: = 300m \\ \\ so \: \:. \: \: \: \: \: 3x + 5x + 7x = 300m \\ \\ 15x = 300m \\ \\ x = \frac{300}{15} m \\ \\ x = 20m \\ \\ so \: \: find \: \: sides \: \: = > 3x = 3(20) = 60m \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 5x = 5(20) = 100m \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 7x = 7(20) = 140m \\ \\ a) \: \: longest \: \: side \: \: = 140m \\ \\ b) \: \: shortest \: \: sides \: \: = 60m$

I hope this will be help you