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Geometry

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30-60-90 Triangle: Find Rectangle Perimeter

GEOM-IASSZL

McGinness. Created for Albert.io. Copyright 2016. All rights reserved.

Rectangle $PIER$ is given. Find the perimeter of rectangle $PIER$.

A

$9+3\sqrt {3}$

B

$18+6\sqrt {3}$

C

$18+9\sqrt {3}$

D

$24\sqrt {3}$