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

Answer

`~ 8.72 m^(2) ; 0.0855 m^(3)`

Explanation

`l = 4.234 m , b = 1.005 m , t = 2.01 cm = 0.0201 m`
Area ` = 2( lb + bt + t)`
` = 2[ 4.234 xx 1.005 + 1.005 xx 0.0201 + 4.234]`
` = 8.7209478 m^(2) ~ 8.72 m^(2)` ( three significant figures )
Volume ` = lbt = 4.234 xx 1.005 xx 0.0201`
` = 0.0855289 m^(3) = 0.0855 m^(3)`
( three significant figures)