Answer
Length of the needed curbing = 126.8 m
Square feet of sod needed = 672 m$^{2}$
Work Step by Step
Perimeter of a Triangle: $P$ = $a$ + $b$ + $c$
Area of a Triangle: $\frac{1}{2}$$b$$h$
$P$ = 32 m + 52.8 m + 42 m
$P$ = 126.8 m
$A$ = $\frac{1}{2}$(42 m)(32 m)
$A$ = 672 m$^{2}$
