Which is the length of the missing side?

A quadrilateral is shown with side lengths of 6 yd, 4 yd, 4 yd, 6 yd and blank yd. The perimeter is given as 25 yd.

A.3 yd

B.4 yd

C.5 yd

D.6 yd

1 answer

The perimeter of any quadrilateral is the sum of all its sides.

So,

6 yd + 4 yd + 4 yd + 6 yd + x yd = 25 yd

20 yd + x yd = 25 yd

x yd = 25 yd - 20 yd

x yd = 5 yd

Therefore, the missing side length is 5 yd.

The answer is option C.