cutout a 21 inch diameter square shaped pad will have an area of approximately 228 square inches not including the circular cutout fig1 is a bottom perspective view of a single pentagonal shaped burnisher pad 146 for use as a pair on the uhs twin headed burnisher in this view the corners of the pentagon are rounded a 14 inch diameter pentagonal shaped pad will have an area of approximately 113 square inches not including the center circular cutout a 15 inch diameter pentagonal shaped pad will have an area of approximately 131 square inches not including the center circular cutout a 16 inch diameter pentagonal shaped pad will have an area of approximately 151 square inches not including the center circular cutout a 17 inch diameter pentagonal shaped pad will have an area of approximately 171 square inches not including the center circular cutout a 21 inch diameter pentagonal shaped pad will have an area of approximately 264 square inches not including the circular cutout fig1 bottom perspective view of cross shaped burnisher pad 148 for use as a matched pair on uhs twin headed burnisher in this view the corners of the cross are rounded this cross shaped burnisher pad has four lobes and each are separated one from the other by an angle of approximately 90 u00b0 measured from the center line to the center line of each petal a 14 inch diameter cross shaped pad will have an area of approximately 68 square inches not including the center circular cutout a 15 inch diameter cross shaped pad will have an area of approximately 79 square inches not including the center circular cutout.