Question

Tristan has this rectangular bulletin board shown. What is the most she can increase the length of her bulletin board in order to maintain a perimeter of no more than 21 feet?

A. 3ft
B. 3.5ft
C. 6ft
D. 7ft

Answer 1

Answer:

Your answer would be B, 3.5ft

Step-by-step explanation:

L = 4 + 3.5 = 7.5

W = 3

Perimeter = 7.5 + 3 + 7.5 + 3 = 21

Extra :

7.5 + 7.5 = 15

3 + 3 = 6

15 + 6 = 21

Brainliest please

Answer 2

3.5 ft. this is because to get the perimeter you add up all of the sides, and 3ft + 3ft + (3.5ft + 4ft) + (3.5ft + 4ft) it would give you 21 feet. hope this helps