Question

warm - up which is greater? clare wonders if the height of the toilet paper tube or the distance around the tube is greater. what information would she need in order to solve the problem? how could she find this

Explanation:

Step1: Identify required info

She needs the height of the tube and the circumference of the circular - cross section. The formula for the circumference of a circle is $C = 2\pi r$ (where $r$ is the radius of the circle).

Step2: Find the height

She can use a ruler to measure the height of the toilet - paper tube directly.

Step3: Find the circumference

She can use a string to wrap around the tube once and then measure the length of the string with a ruler. Or if she knows the radius or diameter of the circular cross - section, she can use the formula $C = 2\pi r$ or $C=\pi d$ (where $d$ is the diameter) to calculate the circumference.

Answer:

She needs the height of the tube and the circumference of the circular cross - section. She can measure the height with a ruler. She can measure the circumference with a string and a ruler or calculate it if she knows the radius or diameter of the circular cross - section.