Find the surface area of the rectangular prism 9ft,12ft,4ft

Give all possible names for the line shown.calculation tip: lines can be written with either point first.

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.