-- The full central angle of the whole circle is 360° .
-- 112° is (112/360) = 0.3111... of the whole circle.
-- If we can find the full circumference, then the arc inside
the 112° angle is just 0.3111 of the whole thing.
The circumference of a circle is (pi) x (diameter).
The radius of this circle is 7.2 cm, so the diameter is 14.4 cm.
Circumference = (pi) x (14.4 cm) = 45.239 cm
The arc inside the 112° angle is
(0.3111...) x (45.239 cm) = 14.074 cm
Rounded to the nearest hundredth: 14.07 cm .
