First calculate th feet of lace she haven't used.
9 - 3 = 6 ft
now we can convert feet into yard. we can divide the amount into 3 because it says 3ft is 1yrd
6 / 3 = 2 yards
The pieces shown are like all of 8 slices of a pizza.
the area of cirlce = area of the rectangle formed by rearranging the pizza slices.
= (pi*r)*r
