Then the sides of the similar triangles must be 3x, 5x, and 7x
3x+5x+7x=75
15x=75
x=5
the shortest side is 15
or
perimeter of original = 15
perimeter of new one = 75
so the sides have been increased by a factor of 5
new triangle is 15, 25, and 35
The lengths of the sides of a triangle are 3, 5, and 7
inches. How many inches long is the shortest side of a
similar triangle that has a perimeter of 75 inches
1 answer