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: 30


21 $units^{2}$

Work Step by Step

Count the units between A and D to find $b_{1}$ Count the units between F and J to find $b_{2}$ Count the units from point C to point J to find the height. A=$\frac{1}{2}$h($b_{1}+b_{2}$) A=$\frac{1}{2}$(3)(9+5) A=$\frac{1}{2}$(3)(14) A=21
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