A garden path is 34^2 meters, a builder paves it with square slabs with sides of 50 centimetres. How many slabs does he need to pave the path?
The question I have on my paper has a diagram and because I can't show the diagram I can't write the question the way it is written. The answer is 136. I first divided 3400 by 50 and got 68. I then divided 3400 by 25 and got the correct answer of 136.
So my question is this, why do you divide 3400 centimetres by 25 centimetres and not 50 centimetres?