^{22}/

_{7}= 3.142857. Using 3.141593 as the value of π, compute the percent error introduced by using

^{22}/

_{7 }instead.

A common approximation of π is ^{22}/_{7} = 3.142857. Using 3.141593 as the value of π, compute the percent error introduced by using ^{22}/_{7 } instead.

A ten-question test consists of true-or-false questions. What is the probability that a student who guesses at every answer will get them all wrong?

Each side of a cube must measure 1.00 inches ± 1%. What will be the percent tolerance for the volume?

The Great Pyramid of Giza was 280 cubits tall when built. Each side of the base was 440 cubits. What was the volume in cubic cubits? Round your answer to two significant digits.

You flip a fair coin three times in a row. What is the probability that the coin will land heads up at least twice?

Belinda needs to design a label for a can. The can is 4^{3}/_{8}" tall and 2^{7}/_{8}" in diameter. The label requires ^{1}/_{8}" clearance for the rim at the top and bottom of the can. It must wrap around the can with at least ^{1}/_{4}" overlap for glue. To the nearest ^{1}/_{16}", what are the dimensions of the label Belinda must design?

Line AB is parallel to line CD. Find the measure of segment AE using the information provided. Can you also find the length of segment BE?

Line AB is parallel to line CD. The measure of segment AB is twice the measure of segment CD. What is the ratio between the area of ΔABE and ΔCDE?

Line BD is parallel to line AC. What is the relationship of the area of triangle ABD to triangle BCD?

- The areas are the same.
- The area of ABD is greater than the area of BCD.
- The area of ABD is less than the area of BCD.
- Impossible to tell from given information.

A room is 15' long, 12' wide, and 8' high. What is the volume of the room in cubic feet?

Find the value of *y. *Find the area of the triangle. Find the value of *x*. What is the measure of angle B (the top angle)?

For each of the following three-digit numbers, insert one digit anywhere to make a number divisible by 72.

151, 352, 511, 722, 812, 993

For anyone who doubts that math can be fun, take a look at this site created by a young woman with a love for the beauty and weirdness of numbers. Here's a recent video she made.

Enjoy!

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