Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 8 - Geometry - Summary Exercises - Perimeter, Circumference and Area - Page 577: 7


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$^2$.

Work Step by Step

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$
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