Each side of a cube is measured to be 7.203m. What is (i) the total surface area and (ii) the volume of the cube to appropriate significant figures ?

Explanation

Length of a side = 7.203 m
(i) Total surface area = `6a^(2)`
`6xx7.203xx7.203=311.29`
this to be rounded off to 4 significant figures as 7.203 as 4 significant figures.
`:.` Total surface area is `311.3m^(2)`
(ii) Volume of the cube `= a^(3)`
`= 7.203xx7.203xx7.203= 373.71 `
This is to be rounded off to 4 significant figures as 7.203 a 4 significant figures
`:.` The volume = 373.7 `m^(3)` .