Answer:
-0.10
Step-by-step explanation:
-.25--.5+.4+-.75
-.25+.5+.4-.75
.25+.4-.75
.65-.75
-0.10
She saved 3/7 because 7/7-4/7 equals 3/7.
The second set of points is your answer.
9" = the diameter
4.5" = the radius
area of a circle = π * r^2
area of pie = 4.5^2 * π
8-3 = 5 so 5/8 remaining
5/8 * 4.5^2 *π
this is equal to 39.7 which rounds to 40"^2