Icircle the answer but i don't know how i did ples me to find out the

He uses 6 pounds :)
if he uses 3 pounds out of 5 pounds it means you have to times both the top and the bottom of the fraction until you get the amount he actually used if that makes sense

so if it he uses 3/5 that’s equivalent to 6/10 :)

r   = 2.65m

good luck!

cutie~