#### Answer

A. 12 cm

#### Work Step by Step

We use the formula for the area of a kite to obtain:
A=$\frac{1}{2}$$d_{1}$$d_{2}$
120=$\frac{1}{2}$(20)$d_{2}$
120=10$d_{2}$
12=$d_{2}$

Published by
Prentice Hall

ISBN 10:
0133281159

ISBN 13:
978-0-13328-115-6

A. 12 cm

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