exam Maths Puzzle Numerical Ability

Hi,

I need to find the surface area of a square with a base of 2yd and a height of 2yd.


Thank you

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exam Other Question
Solve in a 2 column setup.

Given: ABCD is a parallelogram; W,X,Y,Z are midpoints of segments AO,BO,CO,DO.
Prove: WXYZ is a parallelogram.



I am having trouble drawing s^-1/4=81. what does s equal?