How do you calculate the square feet of a roll of paper towels?

Is there oxyge on Ceres? 14 stone and 200 pounds equals how many kg? True or false Addition of a detergent to water increases the surface tension of the water? Do you currently use combustion to produce nuclear energy in nuclear reactors? What microscope is used for observing yeast mitochondria? How does density of helium compare to the density of oxygen and nitrogen the major gases in air? Are the different streak methods appropriate to the cell densities recovered? Do synovial joints contain enzymes? Does hair get damaged when its dark brown and you die it blonde? What is a water molecules from high to low concentration? What living things are sensitive? Which notation is used to represent gamma decay? Who was the American author who portrayed the struggles people faced in settling the great plains? What flowers can be planted in full sun? 15 kilometers equal how many miles? How young can male pattern baldness occur? Why Hair dryers do not have earth wire? What is the primary function of the mitochondria cell part? Which projection takes slices of a globe and stretches them? Is there dark matter in earth?