## Basic College Mathematics (10th Edition)

Triangle and Rectangle $P = 10.3cm$ $A = 6.2cm^2$
Triangle and Rectangle $P = 3.4 + 2.1 + 2.5 + 2.3 = 10.3cm$ $A = 2.1*2.5 + \frac{2.1*(3.4-2.5)}{2} = 5.25 + 0.945 = 6.2cm^2$