Question

Find the area and circumference of this circle

Answer 1

If the diameter is 8.5, then the radius will be 4.25.
Area = 4.25 x 4.25 x 3.14
              18.02 x 3.14
                  56.5828 ≈ 56.7
AREA = 56.7
Circumference = 2 x 3.14 x 4.25
                              6.28 x 4.25
                                 26.69
CIRCUMFERENCE = 26.69
Hope this helps! :D