The length of a cube is 2.3 cm. What is its volume rounded off to 4 significant digits in cm^3?

Category: QuestionsThe length of a cube is 2.3 cm. What is its volume rounded off to 4 significant digits in cm^3?
Editor">Editor Staff asked 1 year ago

The length of a cube is 2.3 cm. What is its volume rounded off to 4 significant digits in cm^3?
 
(a) 12.67
 
(b) 12.167
 
(c) 12.17
 
(d) 13
 
I have been asked this question by my college professor while I was bunking the class.
 
This question is from Significant Figures topic in portion Units and Measurements of Physics – Class 11
Select the correct answer from above options 
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1 Answers
Editor">Editor Staff answered 1 year ago

The correct answer is (c) 12.17
 
Explanation: Volume of a cube is equaled to its length cubed, therefore, required volume = 12.167 cm^3. The 67 in the end will be rounded off to 7, hence the final number becomes 12.17.


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