The triangle below has a total perimeter of 450 cm:
picture of a triangle with sides 128 and 150. third side unknown
write an equation and solve it to find the length of the longest side of the triangle.

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need