A 12 inch-diameter pizza and a 16 inch-diameter pizza are each cut into eight congruent slices. Jane ate three slices of the 12 inch pizza. Mark ate three slices of the 16 inch pizza. How many more square inches of pizza did Mark eat than Jane? Express your answer as a common fraction in terms of pi.

Question

Reyna Beck

Mathematics

27 October, 14:51

A 12 inch-diameter pizza and a 16 inch-diameter pizza are each cut into eight congruent slices. Jane ate three slices of the 12 inch pizza. Mark ate three slices of the 16 inch pizza. How many more square inches of pizza did Mark eat than Jane? Express your answer as a common fraction in terms of pi.

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Answers (1)

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Darren · Answer 1

Area of 16inch pizza = (pi) r^2 = 64pi

Area of 12 inch pizza = (pi) r^2 = 36pi

Jane ate 3 slices of 12" pizza = 3/8 * 36 = 13.5pi

Mark ate 3 slices of 16" pizza = 3/8*64 = 24pi

Difference Mark ate than Jane = 24-13.5 = 10.5pi (sq inches)