If a circular swimming pool is 20 yards across, how big would a pool cover have to be to sit exactly over the surface of the water? (Assume 3.14)

A.31.4 yds
B.3140 yds
C.314 yds
D.40 yds

If a circular swimming pool is 20 yards across how big would a pool cover have to be to sit exactly over the surface of the water Assume 314 A314 yds B3140 yds class=