Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 10 - Area - 10-1 Areas of Parallelograms and Triangles - Practice and Problem-Solving Exercises - Page 620: 21


Length = 18 in Corresponding height = 12 in

Work Step by Step

Use the formula for the area of a triangle: A=$\frac{1}{2}$bh 108=$\frac{1}{2}$(3x)(2x) 216=6$x^{2}$ 36=$x^{2}$ 6=x Substitute 6 into the equations for length and height: l=3(6)=18 h=2(6)=12
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