Answer:
14/3 in. or 4 2/3 in.
Step-by-step explanation:
Perimeter is the sum of all sides.
P=4s
Fill in known numbers

Solve

The number of pieces in a whole relates to the size of each piece because say you have a pizza and you want to divide into five pieces for five of your friends it depends on how big the pizza is to if it can feed that many people.
What’s the whole question???!
To solve for an unknown number, you have to keep isolating it till it is all alone:
A=P(1+rt)
(1+rt)=A/P
rt=A/P -1
r=(A/P-1)/t
A is the answer 7th graders are not likely