A weather balloon holds 2850 m³ of helium the density of helium is 0.1685 kg/m³ how many kilograms of helium does the balloon contain please round your answer to the nearest whole number and only enter (numerical value) in the answer blank.

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %