I need help, someone please explain this to me

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.