Item 1
Find the surface area of the regular pyramid.

The answer is 16 in. sq.

Step-by-step explanation:

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16in²

Step-by-step explanation:

SA=2²+4(1/2)(2)(3)

=4+12

SA=16 in²

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Among the choices the one that  best describes her prediction is "extrapolation, because a key that is 12 keys from middle C is outside the data set". 

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