Question 4:
A’Leila is building a pen for her pet donkey. The pen is a rectangle with one side measuring b yards and the adjacent side measuring a yards.
A’Leila knows that a=1/3b
a. Write two different expressions giving the perimeter of the donkey’s pen. Using variable “b” only.
+2
b.Use the value a=12. Evaluate the perimeter of the pen for that value, using one of the expressions that you wrote.
+2
c.(don’t answer)
a. The perimeter of the pen can be expressed as 2a + 2b or 2(a + b).
b. If a = 12, then we can substitute it into one of the expressions from part a. Let's use 2(a + b).
Perimeter = 2(12 + b) = 24 + 2b.