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Each side of a cube is measured to be 7....

Each side of a cube is measured to be 7.203m. What is (i) the total surface area and (ii) the volume of the cube to appropriate significant figures ?

Text Solution

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The number of significant figures in the measured length is 4. The calculated area and the volume should therefore be rounded off to 4 significant figures.
Surrface area of the cube = `6(7.203)^(2)m^(2)`
`" "=311.299254m^(2)`
`" "=311.3m^(2)`
`" Volume of the cube "=(7.203)^(3)m^(3)`
`" "=373.714754m^(3)`
`" "=373.7m^(3)`.
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