3 years ago

Find the surface area please help

Mathematics

1 answer:

Ivanshal [37]3 years ago

3 0

Answer:

$A= {a}^{2} + 2a \sqrt{ \frac{ {a}^{2} }{4} + {h}^{2} } \\ = {7}^{2} +2·7· \sqrt{ \frac{ {7}^{2} }{4} + {12}^{2} } \\ =224$

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