Question

A wire is first bent into the shape of a rectangle with width 4in and length 5in. Then the wire is unbent and reshaped into a triangle. If each side of the triangle has equal length, what is the length.

Answer 1

find the area

Answer 2

this is all new to me thats not really helping much

Answer 3

perimeter= 2(l+w)
=2(4+5)
=18

3x=18
x=18/3
x=6

so length=6