Answer:
91 meters
Step-by-step explanation:
If the ratio of the sides of a triangle is 2:6:7 then the sides of the triangle are
2x, 6x and 7x for some number x
The perimeter of the triangle is 195 meters, so
2x+6x+7x = 195 ===> 15x = 195 ===> x = 195/15 ===> x = 13
The longest side is 7x, hence the longest side is
7*13 = 91 meters
