S.A of cylinder (closed at both ends) is 2xrh + 2xr^2
S.A of cylinder (open at one end) is
2xrh + xr^2
'x' represents 'pi'
Hope i helped
If Ken wants to pay more than 130, he needs to drive more than 90 miles. You subtract 94 from 130, which equals 36. 36 divided by .4 (for the price per mile) and it equals 90.
Three 3 4-1 that is all i know