A stick has a length of 12.132 cm and another has a length of 12.4 cm. If the two sticks are placed end to end what is the total length? If the two sticks are placed measured to be 7.203 m. What is (0) The total surface area and (ii) The volume of the cube, to appropriate significant figures?
Answers
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Answer:
a) When placed end to end total length is
l=l+11+l2
l1=12.132cmandl2=12.4cm.
∴l1+l2=12.132+12.4=24.532cm.

In additional final answer must have least number of significant numbers in that addition. i.e, one after decimal point.
So our answer is 24.5 cm.
b) For difference use l1-l2
i.e., 12.4-12.132=0.268cm.
In subtraction final answer must be adjusted to least number of significant figures in that operation.
Here least number is one digit after decimal . By applying round off procedure our answer is 0.3 cm
Explanation:
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