Remember we use Pi to find the circumference or area of a circle. This problem says how to find the area of a circle with a radius of 3ft and find the circumference. To find the area, the formula is pi x radius x squared. So if the radius is 3 then you multiply by 3 to get 9. Then you multiply by pi, which is 3.14. 3.14 x 9 is 28.26ft. So the area of the circle is 28.26ft.
To find the perimeter of a circle, we use a different formula. the formula to find the perimeter of a circle is pi x diameter. Since the radius is 3 you add another radius to get the diameter which is 6. So the formula is 3.14 x 6. You multiply that to get 18.84ft. So the diameter of this circle is 18.84ft.
To find the perimeter of a circle, we use a different formula. the formula to find the perimeter of a circle is pi x diameter. Since the radius is 3 you add another radius to get the diameter which is 6. So the formula is 3.14 x 6. You multiply that to get 18.84ft. So the diameter of this circle is 18.84ft.
RSS Feed