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in Physics by (33.0k points)

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. 

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Length I = 4.234 m,

Breadth b = 1.005 m,

Thickness t = 2.01 cm = 0.0201 m

Area = 2 × (lb + bt + It)

= 2 × (4.234 × 1.005 + 1.005 × 0.0201 + 4.234 × 0.0201)

= 8.72 m2

(Rounding off to 3 significant figures)

Volume = Ibt

= 4.234 × 1.005 × 0.0201

= 8.55 × 10-2 m

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