## Geometry: Common Core (15th Edition)

$27\ in^2$
Find the area of the larger triangle and deduct the area of the smaller, unshaded triangle, to find the shaded area. $A_1=\frac{1}{2}bh=\frac{1}{2}(10)(6)=(5)(6)=30$ $A_2=\frac{1}{2}bh=\frac{1}{2}(3)(2)=(1.5)(2)=3$ $A=A_1-A_2=30-3=27$