# math

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the area of a squre is 9 square yards.
3x3x3x3 what is the are of the square in squar feet?
i got 81 square feet is that right?

• math -

Right.

• math -

what is the surface are of a rectangle prism 10 in L x 2 in w x 4 h
would it be 80 sq inches?

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