Answer
The number of plants needed to be placed outside the bed is\[48\].
Work Step by Step
The number of plants needed to place outside the bed will be determined by finding the perimeter of the square field in the feet. Then, convert the perimeter from feet to inches and divide the perimeter by the space of 8 inches.
Computation of perimeter (P) of the square field can be done by using the formula mentioned below:
\[P=4\times \text{side}\].
Length, l is 8 feet. Compute the perimeter as shown below:
\[\begin{align}
& P=4\times \text{side} \\
& =4\times 8\text{ ft} \\
& =32\text{ ft}
\end{align}\]
1 foot is equivalent to 12 inches.So, it is required to convert the value of perimeter in feet to inches using the unit fraction.
\[\frac{12\text{ inches}}{1\text{ ft}}\]
Convert feet into inches as follows:
\[\begin{align}
& 32\text{ ft}=\frac{32ft}{1}\times \frac{12\text{ inches}}{1ft} \\
& =384\text{ inches}
\end{align}\]
For the computation of a number of plants, divide the perimeter \[384\text{ inches}\] by the space 8 inches.
\[\begin{align}
& \text{Number of plants}=\frac{384}{8} \\
& =48
\end{align}\]
