## Basic College Mathematics (10th Edition)

The yellow triangle has a perimeter of 63 ft and an area of 180 ft$^2$. The pink triangle has a perimeter of 32.4 cm and an area of about 45.1 cm$^2$.
yellow triangle: P=18+21+24=63 ft A=0.5(24)(15)=180 ft$^2$ pink triangle: P=9.5+13.4+9.5=32.4 cm A=0.5(9.5)(9.5)$\approx$45.1 cm$^2$