Posted by mary on Monday, April 18, 2011 at 4:19pm.
Need help I missed this problem on my test. My answer was 31.8in^2. The right answer was 8.0in^2
How should I have worked the problem:
A pie has a diameter of 9 inches. Each slice of the pie has a central angle of 45 degrees. What is the area of each slice of pie?

Geometry  Ms. Sue, Monday, April 18, 2011 at 4:28pm
A = pi * r^2
A = 3.14 * 4.5^2
A = 3.14 * 20.25
A = 63.585 sq. in.
The pie is divided into 8 pieces.
63.585 / 8 = 7.948 sq. in. >> rounded = 8 square inches.

Geometry  anna, Thursday, May 22, 2014 at 11:42am
Find the area of a regular octagon with a perimeter of 80 inches round to the nearest tenth
Answer This Question
Related Questions
 Per Calculus  An apple pie has a 12 inch diameter and the angle of one slice is...
 algebra  an apple pie is cut into 6 slices each slice is solid for 2$ the ...
 Geometry  One can of pumpkin pie mix will make a pie of diameter 8 in. If two ...
 Geometry  I missed this problem on my test. I had 23 ft and the correct answer ...
 algabra  A cylinder has a radius of 5 in. If the volume of the cylinder is 250 ...
 math  two third of a blueberry pie is left in the refrigerator. If the leftover...
 math  An apple pie 10 cm in diameter costs $1.50. Then, an apple pie 20 cm in ...
 physics  The motion of a particle is described by x = 10 sin (piet +pie/2 ). At...
 calculus  find the volume of the solid formed by revolving the region bounded ...
 Math  Needing help! Oliver made a pizza that was the same size as the pizza pan...
More Related Questions