Question 7: Insert Picture of Work
The diagram shows the radius of the opening of
a waffle ice cream cone.
8 mm
Susan will put sugar around the rim of the ice
cream cone. Which of the following is closest to
the circumference of the opening in millimeters?
A.
25.13 mm
C. 50.24 mm
Need Help?
B
201.06 mm
D. 12.57 mm

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)