A monument outside city hall has dimensions as shown below in the figure. If one gallon of paint can cover 213 ft^2, how many ga
llons of paint must be bought in order to paint the monument? Assume that the base of the monument cannot be painted and that paint can be bought only by the gallon.
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.
Normalize this vector by dividing it by its norm:
To get another vector orthogonal to the first two, you can just change the sign and use