I need help with this please

4.) A student measures a piece of aluminum foil and records its width as 7.95cm and its length as 8.95cm; however, the thickness of the aluminum foil is too small to measure with a ruler. Calculate the thickness of the foil in centimeters if the mass of this piece of foil is 16.50g and you already know aluminum's density to be 2.70g/cm3. Your lab this week has you examine this exact same thing in real life. Check out the calculation page in the lab worksheets to see how you would approoch the calculation with your lab data, and then apply it to this problem here