we know that area of semi circle=pi*r²/2 diameter=5 ft radius r=5/2----> 2.5 ft so area of semicircle=pi*2.5²/2-----> 9.8125 ft²
<span>the area of each stained glass section=area semicircle/3 </span><span>the area of each stained glass section=9.8125/3----> 3.27 ft</span>²---> 3 ft²