Notice that the shape is a rectangle whose length (l) is 78yd and width (w) is 23yd.
a) The perimeter and area of a rectangle are given by the formulas below
[tex]\begin{gathered} P=2l+2w \\ \text{and} \\ A=lw \end{gathered}[/tex]Thus, in our case,
[tex]\begin{gathered} \Rightarrow P=2\cdot78+2\cdot23=202 \\ \text{and} \\ A=78\cdot23=1794 \end{gathered}[/tex]The answers to part A are Perimeter=202yd, Area=1794yd^2.
b) The perimeter is defined as the boundary of a shape; therefore, since Keiko will walk around the field, we need to use the perimeter. The answer to part b) is Perimeter.
c) The area of a figure is its surface. Therefore, if we need to cover the field with turf, we need to use its area. The answer to part c) is Area.
