A solid consists of a right circular cylinder surmounted by a hemisphere. The common radius of the hemisphere and the cylinder is 5 cm and the height of the cylindrical part is 20 cm. The solid is made of steel whose density is 7.8g/cm3.
a. (i) Find the total volume of the solid in cm3.
b. (ii) Determine its mass in kilograms, correct to two significant figures.
c. (iii) Calculate the weight of the solid in newtons, taking g=9.8m/s2.