we know that volume of the prism=area of the base*height height=24 yd
area of the base is a equilateral triangle so the internal angles are 60 degrees with the law of sine calculate the area Area=(1/2)*a*b*sin C-----> (1/2)*13*13*sin 60-----> (1/2)*13*13*√3/2 Area=73.18 yd²
