# Manholes Cover Puzzle

Why is it better for manhole cover to be round rather than square?

Any problem can be solved in many creative ways. The more street smart you’re, the more logical you’re you can think of many ways of solving a given problem, specially when you get an unusual question to answer. There can be many reasons for the manholes being circular rather than squarish or rectangular. Don your thinking hats and come up with some cool reasons. You can explore many such puzzles at Quickermaths.com

#### Vineet Patawari

Hi, I'm Vineet Patawari. I fell in love with numbers after being scared of them for quite some time. Now, I'm here to make you feel comfortable with numbers and help you get rid of Math Phobia!

## 12 thoughts to “Manholes Cover Puzzle”

1. Girish says:

A round manhole cover cannot fall through its circular opening, whereas a square manhole cover could fall in if it were inserted diagonally in the hole. Circular covers don’t need to be rotated or precisely aligned when placing them on the opening. A round manhole cover is easily moved and rolled.

2. Ganesh says:

Side of the Square=”a”.
Diagonal length is more than side of the square (more than “a”).

3. Anant Jalgaonkar says:

Sides of Rectangular or square manhole covers can fall in the manhole through diagonal side of the manhole.

4. Prem says:

Because square manholes may fall inside if it is not placed in but circular does not have arrangements. In whatever way you place it, it’s the same and cannot go inside the manhole

5. Mage says:

In a circular design, when pressure is applied it is equally distributed. A square or rectangular design will have weak points at corners and may break easily.

6. juju says:

Circle’s walls can withstand better than any other shape. That’s why tunnels are round in shape instead of square. The circular shapre distributes the pressure better than othe shapes.

7. Mohit says:

A square manhole cover can go down the manhole diagonally. While a round one cannot.

8. Ahh..you are not even close to the answer. Try again

1. florida says:

can you plzzz tell us the answer

9. Because for same circumference, circle has larger area. So higher preference accordingly.

1. RAJESH says:

as i think it is for safety purpose
because square manhole cover sideways and drop it down the diagonal of the manhole. You cannot drop a round manhole cover down the manhole. Therefore, round manhole covers are safer and more practical than square ones.

1. SURESH GUPTA says:

I think it matters for cost as per area of a rectangle or square with a circle. because round main hole takes 21.428571429 % less area from a square main hole.