Personification W
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Arvianna Johnson
Pre Assessment
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Clever Portal
74 End of Units X
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Introduction to Cha.
Card 7 of 9
Problem 6
Lin's father is paying for a $20 meal. He has a 15%-off coupon for the meal. After the discount, a 7%
sales tax is applied.
What does Lin's father pay for the meal? Type the answer in the box below.
Cynlsinar
What the answer

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)