3/7 * -2 1/5 = (turn ur mixed number into an improper fraction)
3/7 * - 11/5 = (now just multiply straight across)
(3 * -11) / (7 * 5) = -33/35 <====
The answer is 45. there are 5 sides. each one is 9cm. 9*5= 45.
hope this helps.
Its a 50/50 chance because a coin only has 2 side