In , there are .
In , there is one paving slab. So:
Each multiplication converts the units one step at a time. First, I convert square meters to square millimeters. Then, I convert 400 square millimeters to paving slabs.
Hi; question I have 25sqm to cover with paving slabs whicj are 400mmsquared. answer my answer is convert mm to m ie 0.4*0.4 = 0.16msquared then 25 / 0.16 = 156.25 slabs needed are far as I'm concerned this is correct? but I've just used an online calculator that tells me I need 150 slabs surely this is wrong? also I need to cover the same area with turf which is 1sqyard per roll. sqm to sqfeet divide by 0.0929 which gives 25 / 0.0929 = 269.1sqfeet. dividing by 9 because a yard is 9sqfeet gives 269.1 / 9 = 29.9 rolls I'm sure this is correct?Just need confirmation please.Thanks.
No. 1m = 1000mm, so 1sqm = 1,000,000 sq mm is true.
25,000,000 sq mm / 400 sq mm = 62,500 slabs
The issue is, you are thinking of a paving slab as something large. It is not. If the paving slab only has an area of 400 square millimeters, it is TINY. A single "slab" is approximately the size of your finger tip. It is smaller than one square inch.