The circumference of a circle is 44cm. Find its radius and its area.

The circumference of a circle is (pi) x (diameter).

Diameter = (circumference) / (pi)

Radius = 1/2 of the diameter = (circumference) / (2 pi)

= (44cm) / (2 pi) = 22cm/pi = 7 cm (rounded)

The area of a circle is (pi) x (radius) ² =

(pi) x (22cm/pi) ² =

(22cm) ²/pi =

(484 cm²) / pi = 154.1 cm² (rounded)

=