Find the area of each circle with the given radius or diameter. Use 3.14 for pi.
r = 4 in
r = 2 in
d = 2 in
r = 8
d = 12 in
50.24 in?
200.96 in?
113.04 in?
12.56 in?
3.14 in?
1. r = 4 in
Area = π * r^2
Area = 3.14 * 4^2
Area = 3.14 * 16
Area = 50.24 in^2
2. r = 2 in
Area = π * r^2
Area = 3.14 * 2^2
Area = 3.14 * 4
Area = 12.56 in^2
3. d = 2 in
r = d/2 = 2/2 = 1 in
Area = π * r^2
Area = 3.14 * 1^2
Area = 3.14 in^2
4. r = 8
Area = π * r^2
Area = 3.14 * 8^2
Area = 3.14 * 64
Area = 200.96 in^2
5. d = 12 in
r = d/2 = 12/2 = 6 in
Area = π * r^2
Area = 3.14 * 6^2
Area = 3.14 * 36
Area = 113.04 in^2