The length , breadth and thickness of a rectangular sheet of metal are 4.234 m, 1.005 m, and 2.01 cm respectively. Give the area and volume of the sheet to correct significant figures.

Explanation

Total area of a sheet
`=2[lxxb+bxxh+hxxl]`
`2[4.234xx1.005+1.005xx0.0201+0.0201xx4.234]`
`=2[4.25517+0.0202005+0.0851034]`
`=8.7209475`
`=8.72 m^(3)`

Volume of a sheet `=lxxbxxh`
`=4.234xx1.005xx0.0201`
`=0.085528917`
`~~=000855` [round off up to 3 digit]