# Plot semi-circle on given grid

Oct 14th, 2015
Anonymous
Category:
Mathematics
Price: \$20 USD

Question description

The grid: Top left corner 0,0 ; Bottom left corner 500, 0; Top Right corner 0,500

Modify the equation of a semi-circle to plot the top half of a circle using the grid and values given.

Semi Circle: y = sqroot((r2-(x-a)^2))+b

Values: a=235  b=230  r=20

I understand how to do this on a crtesian plane, but the given grid is throwing me off.  It numberd like the third quadrant of the cartiean plane but with out negatives.

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