17/32. You can turn 5/16 into 10/32. 17/32>10/32
A=P(1+rt)
A/P=1+rt
A/P-1=rt
AP-P/Pr = t
A-1/r=t
ok so take 4:20 pm and subtract 4 hrs from it so they left at 12: 20 pm
hope this helps :)
The formula for the lateral surface area of a right circular cone is:

where r is the radius of the base, and l is the slant height.
Plugging in the values we get: