Kelly loves to eat chocolate pizza. Each square inch of chocolate is 30 calories. She orders a slice of chocolate pizza from a pizza with a diameter of 12 inches that is cut with a central angle of 40 degrees. How many calories does she eat?

Question

anonymous · Answer

A  = pi * r^2
r = d/2
r=6
A = pi 36 square inches
cross product - 
360 degrees = 36pi
40 degrees = x
x = 4pi square inches
4pi * 30 = 3 392.93 calories