Robert wants to put lights around the edge of his deck. the deck is 46 feet long and 26feet wide. how many yards of lights does he needs.

144 feet of lights

Step-by-step explanation:

This is because when the problem says "around" it refers to perimeter. The problem also gives you the length and width of the deck, which is what you will need for the perimeter formula.

Perimeter = length•2 + width•2

Now we insert the length and the width.

Perimeter = 46•2 + 26•2

=92+52

=144 feet

He would need a total of 46 yards of lights.