Mark works for a caterer in Berrygood on the weekends. He uses a 12 inch round platter of different chesses he assembled. What is the surface area of the section of the platter if it is less than half of the whole platter and it is 144 degrees? Answer if you dare
would it be 15.07 or 90.43, or 45.22, or 180.86, or none of the above?
limited amount of time to answer! So hurry!
2007-11-07 13:54:36 · 3 answers · asked by Sellie 2 in Science & Mathematics ➔ Mathematics
pi*r^2 = surface area of platter
pi*6^2= 113.097 square inches
144 degrees/360 degrees = percent of platter covered
0.4 = percent of platter covered
113.097 square inches*0.4 = area of the cheeses
45.24 = area of the cheeses
2007-11-07 14:03:03 · answer #1 · answered by James B 2 · 0⤊ 0⤋
Area of platter= 36 pi
Area of sector proportional to angles
So 144/360 = X/36pi
And 72pi/5 = X (looks like 45.22 is pretty close)
2007-11-07 22:06:47 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋
area=pi* r^2
=36*3.14
=113.04
multiply this by 144/360 to get 45.22
2007-11-07 21:59:18 · answer #3 · answered by kelsey 7 · 0⤊ 0⤋