sarahabramson

Problem of the Week – Week 12

In Numeracy Problem of the Week, QR on March 22, 2010 at 1:43 pm

Problem of the Week

Puzzle 12

You must answer two of the following three questions to earn credit.

If June ate 1/4 of 2/3 of 1/2 of a pie, what fraction of the whole pie did she eat? Express your answer as a common fraction.

If the top surface of a particular slice of pie is a sector of a circle with a vertex angle measuring 20 degrees and the length of the arc is π units, what is the circumference of the top surface of the whole pie? Express your answer in terms of π.

What is the perimeter of the top surface of the remaining portion of the pie if only the slice described in question 2 is removed? Express your answer in terms of π.

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