A metal cylinder with 26.0mm diameter and 75.0 mm height has a density of 8.60 g/mL. Calculate its mass.?

easy ... (26/2)^2 x pi x 75 will give you the volume... multiply that by the density , converting ML to cubic mm !! ... that will give you the answear!! best wishes!

The volume of a cylinder is V = pi x r^2 x h. This cylinder is 2.6cm across so its radius is 1.3cm. Its height is 7.5cm. Its volume is 39.8 cubic centimeters. Good news: in metric, a cubic centimeter is the same as a mL. So our 39.8cm3 cylinder is also a 39.8mL cylinder. If one mL of this material is 8.6g, how much is 39.8mL? (If you want a formula, mass equals density x volume. m=DV.) m = (8.6g/mL)(39.8mL) = 342.3g. Weighs about as much as a can of pop.

The volume of a cylinder is V = pi x r^2 x h. This cylinder is 2.6cm across so its radius is 1.3cm. Its height is 7.5cm. Its volume is 39.8 cubic centimeters. Good news: in metric, a cubic centimeter is the same as a mL. So our 39.8cm3 cylinder is also a 39.8mL cylinder. If one mL of this material is 8.6g, how much is 39.8mL? (If you want a formula, mass equals density x volume. m=DV.) m = (8.6g/mL)(39.8mL) = 342.3g. Weighs about as much as a can of pop.

Volume cylinder = Pi * r * r * h. Pi = 3.142, r = d/2 = 2.6 cm, h = 7.5 cm. I've converted mm to cm since mL is cm^3. Vol = 3.142 * 1.3 * 1.3 * 7.5 =39.8 mL. Density = mass / volume so mass = vol * density = 39.8 mL * 8.60 g/mL =342.2 g

easy ... (26/2)^2 x pi x 75 will give you the volume... multiply that by the density , converting ML to cubic mm !! ... that will give you the answear!! best wishes!