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Find the surface area please help

Find the surface area please help-example-1

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Answer:


A=</p><p></p><p></p><p> {a}^(2) + 2a \sqrt{ \frac{ {a}^(2) }{4} + {h}^(2) } \\ </p><p></p><p></p><p></p><p></p><p></p><p>=</p><p></p><p> {7}^(2) </p><p></p><p>+</p><p></p><p>2</p><p></p><p>·</p><p></p><p>7</p><p></p><p>·</p><p> \sqrt{ \frac{ {7}^(2) }{4} + {12}^(2) } </p><p></p><p> \\ </p><p></p><p></p><p>=</p><p></p><p>224</p><p></p><p>

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User Gordonwd
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