Question

Two flat, circular plates are placed on a circular tabletop. The diameter of each plate is equal to the radius of the table top. Approximately how many square feet of the table top are not covered by the plates? Show or explain your work. Use 3.14 for pi.

Answer 1

A=pR^2-2pr^2, since R=15 and r=7.5

A=225p-112.5p

A=112.5p

A≈353.25 ft^2