Matilda

Matilda measures the perimeter of her bedroom to determine how many feet of border she needs for the tops of the walls. Two walls are each 96 inches long, and two walls are each 3 yards long. She pays $30 for a border that costs $1 per foot. What steps should you take to determine if Matilda bought the correct amount of border? Select all that apply.

- Calculate the area of Matilda's bedroom.
- Convert Matilda's wall measurements so they are both in the same units.
- Calculate the number of feet of border that Matilda bought.
- Add 48 inches and 1.5 yards to obtain the perimeter of Matilda's bedroom.
- Compare the number of feet of border Matilda bought with the perimeter of her bedroom in feet.

Final Answer:

p =  34 ft
x =  30 ft

Step-by-step explanation:

$$\begin{gathered} a=96\text{in}\to \text{ft}=96:12\text{ft}=8\text{ft} \\ b=3\text{yd}\to \text{ft}=3\cdot 3\text{ft}=9\text{ft} \\ p=2\cdot (a+b)=2\cdot (8+9)=34\text{ft} \end{gathered}$$

$$\begin{gathered} c=30\text{USD} \\ l=1\text{USD/ft} \\ x=c/l=30/1=30=30\text{ft} \\ x<p \end{gathered}$$

Try another example