1. 74%
2. 15%
3. 9%
4. 61.7%
5. 83.4%
Hope this helps
I assume that by square corners you mean 90 degree angles. if this is the case then there are 2 in a pentagon. Hope I helped :)
It is very unlikely that the children will be able to digest lactose.
1:100 because 20 divide by 20=1 and 2000 divide by 20 =100