Question

Find the perimeter of the composite figureA) 18 ftB) 14 ftC) 16 ft D) 17 ft

Answer 1

The perimeter of a figure is the sum of all of its sides.

In the given figure we can observe two missing sides, so we need to find its lengths as follows:

So:

`\begin{gathered} 3ft+y=4ft \\ y=4ft-3ft \\ y=1ft \\ And \\ x+2ft=5ft \\ x=5ft-2ft \\ x=3ft \end{gathered}`

Thus, the perimeter is:

`\begin{gathered} P=3ft+5ft+4ft+2ft+y+x \\ P=3ft+5ft+4ft+2ft+1ft+3ft \\ P=18ft \end{gathered}`

The answer is A) 18 ft.