Area of sector of a circle with radius r for sector given in degrees (theta):
A = (1/2)(r^2)(theta)((pi)/(180)
79): Find the area of the sector of the circle. Radius: 2.5 feet. Central Angle: 225 degrees.
I multiplied (1/2)(25/4)(5pi/4), and I got 100pi/16, which reduced to 50pi/8 when I halved it. I reduced that to 25pi/4 or 19.63. But the book's answer is 12.27. How'd I mess up?
2 answers
Left off the trailing parenthesis...
Area of sector of a circle with radius r for sector given in degrees (theta):
A = (1/2)(r^2)(theta)((pi)/(180))
Area of sector of a circle with radius r for sector given in degrees (theta):
A = (1/2)(r^2)(theta)((pi)/(180))
2 answers