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.
(Ans:4.255, 8.56×10-²
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Area
Length =4.234 m
Breadth =1.005 m
Thickness or height=2.01cm=2.01/100=0.0201m=2.01×10^-2
Area=length × breadth
=4.234×1.005
=4.25517 m^2
upto correct significant figures
we have to simplify the result upto 4 significant figures
=4.255 m^2
volume
Volume =length ×breadth × height
=4.234×1.005×2.01×10^-2
=8.553×10^-2 m^3
upto correct significant figure
=8.55 m^3
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