Orange and tangerine trees

Brad's father asked an engineer to survey the field behind their house. He wanted to plant some orange and tangerine trees there. The survey shows the field is thirty-two feet long and six yards wide.

Questions:
What is the area of the field in sq feet?
What is the perimeter of the field in feet?

Correct answer:

S =  576 ft²
p =  100 ft

Step-by-step explanation:

$$\begin{gathered} a=32\text{ft} \\ b=6\text{yd}\to \text{ft}=6\cdot 3\text{ft}=18\text{ft} \\ S=a\cdot b=32\cdot 18=576{\text{ft}}^2 \end{gathered}$$

$p=2\cdot (a+b)=2\cdot (32+18)=100\text{ft}$

Try another example