maths
posted by chelsea on .
A paving block is is in the shape of a prism, the area of it' cross section being 154cm^2.The prism i 17cm long ad the material from whih it is made has a density of 2.2g/cm^3. Calculate the mass of the paving block.
Please can you tell me the method aswell
thanks

Volume of prism
= crosssectional area * height
= 154 cm^{2} * 17 cm
= 2618 cm^{3}
Density = 2.2 g / cm^{3}
Mass
= volume * density
= 2618 cm^{3} * 2.2 g / cm^{3}
= 5759.6 g
= 5760 g (approx.)