Question

5.) Heather wants to build a pen for her new beagle

puppy. She is going to build it in the shape of a
quadrilateral. She decides that she wants the perimeter to
be 360 ft. She already has 360 feet of fence. She
measures out the first side to be 90 ft, the second side to
be 110 feet, and the third side to be 100 feet. She tells her
friend to measure out the fourth side to be 80 feet.
Is this correct? Why or why not? Please show your work.

Answer 1

See below.

Explanation:

90 + 110 + 100 + 80 = 380

The sum of the lengths of the sides is 380 ft.

She has 360 ft of fence.

It is incorrect because the lengths of the 4 sides add to more than 360 ft.