# Chapter 11 - Surface Area and Volume - Get Ready! - Page 685: 3

6

#### Work Step by Step

We use the Pythagorean Theorem: $a^{2}$+$b^{2}$=$c^{2}$ $(2\sqrt 3)^{2}$+$(2\sqrt 6)^{2}$=$c^{2}$ 12+24=$c^{2}$ 36=$c^{2}$ 6=c

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