Question

I got 57.12, but it’s not an answer...I am confusion

Answer 1

check the picture below.


`\bf \stackrel{\textit{area of the semicircle}}{(\pi r^2)/(2)}~~~~+~~~~\stackrel{\textit{area of the triangle}}{(1)/(2)bh} \\\\\\ \stackrel{\textit{area of the semicircle}}{(\pi 4^2)/(2)}~~~~+~~~~\stackrel{\textit{area of the triangle}}{(1)/(2)(12)(8)} \\\\\\ 8\pi +48\qquad \approx\qquad 73.1327412287`