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# Surface Areas and Volume

Surekha Waldia
40mins
Critical thinking, Problem Solving
Remember, Understand, Application, Analysis
Yes
1. To learn to apply concept of Pythagorean Triples.2. To visualize that cylinder is three dimension form of two dimensional rectangle
The idea behind giving this type of problem sum is to develop the spatial intelligence of the students while applying multiple concepts of perimeter, surface
a cylinder of the specific measurement as given in the problem, A thread or a sketch pen to mark around the cylinder

Problem Stated:

Step 1: Make the students work in a group of 3-4 students and give them just 5 mins to solve this problem.

Step 2: Ask them to create a cylinder with a piece of paper of the measurement given above and mark with pen the thread around it.

Step 3: Once the time is over ask each group to show their working for the same.

Note: Twenty years ago, this puzzle appeared on a test administered to top-tier math students from 16 countries around the world. Only 10% of test takers got it right.