This brain teaser is perfect for students, professionals, and anyone who enjoys a good mental workout and testing their IQ!
IQ isn't just a number, it's a testament to your ability to think critically, solve problems creatively, and analyze information effectively.
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This brain teaser challenge focuses on the critical concepts of surface areas and volumes, designed to test your mathematical prowess and observation skills.
You have just 15 seconds to identify which cylinder holds the most and least water.
Brain Teaser IQ Test: Can You Tell Which Cylinder Has The Most And Least Water In 15 Seconds?
Let’s dive into today’s brain teaser challenge. You have five cylinders labelled A, B, C, D, and E.
Question: Can you identify the cylinder with the MOST water and the cylinder with the LEAST water in just 15 seconds?
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Each cylinder contains a different amount of water: 1 unit, 2 units, 3 units, 4 units, and 5 units, respectively.
A has a diameter of 5, B has a diameter of 4, C has a diameter of 3, D has a diameter of 2, and E has a diameter of 1.
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Brain Teasers With Answer
Still trying to find which cylinder has the most and least water in the picture? Look below at the answer.
The answer is cylinders B and E have the MOST and LEAST water, respectively.
Here is the explanation:
Firstly, we have to find the volume of each cylinder.
Volume of a cylinder = π r² h
In the above formula, r is the radius and h is the height.
First, we will find the value of r for each cylinder.
The diameter of cylinder A is 5 therefore, the radius would be 5/2.
Similarly, we shall ascertain the radius of other cylinders using their given diameter.
We have now the radius of all cylinders.
| Cylinder | Radius (r) |
| A | 5/2 |
| B | 4/2 |
| C | 3/2 |
| D | 3/2 |
| E | 1/2 |
Now, let us find the value of h for each cylinder.
We know how many units of water are there in each cylinder.
Therefore, we have now the height of all cylinders.
| Cylinder | Height (h) |
| A | 1 |
| B | 2 |
| C | 3 |
| D | 4 |
| E | 5 |
Now, we shall apply the values in the formula Volume of a cylinder = π r² h
| Cylinder | A | B | C | D | E |
| Volume | π (5/2)² * 1 | π (2)² * 2 | π (3/2)² * 3 | π (1)² * 4 | π (1/2)² * 1 |
|
| 25 π/4 | 8 π | 27 π/4 | 4 π | 5 π/4 |
|
| 19.62 | 25.12 | 21.19 | 12.56 | 3.92 |
We can see Cylinder B has the most water and Cylinder E has the least water.
SHARE this brain teaser with your friends and family. Challenge them to tell which cylinder has the most and least water in 15 seconds or less!
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