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.
A=2×(L×B+B×T+T×L) ∴A=2×(4.234×1.005+1.005×0.0201+0.0201×4.234) ∴A=2×(4.2552+0.0202+0.0851) ∴A=8.721m 2 ∴A=8.721m 2 to correct significant digits V=L×B×T ∴V=4.234×1.005×0.0201 ∴V=0.0855m 3 to correct significant digits
