Express the result of the following calculations to the appropriate number of siginficant figures:
943 × 0·00345 + 101
= 3·25335 + 101
= 3·25 + 101 (Applying the rule of product)
= 104·25
= 104 (Applying the rule of addition)
Express the result of the following calculations to the appropriate number of siginficant figures:
0·58 + 325·65 = 324·23 (Actual result)
While carrying out addition of a number of terms, the result should be reported to the same number of decimal places as that of the term with the least number of decimal places. In the present case, both the given numbers have two decimal places, therefore, the reported sum should be only two decimal places after rounding off.
∴ Correct sum = 325·23
Express the result of the following calculations to the appropriate number of siginficant figures:
Calculate the area of a rectangle whose length is 6.00 m and breadth 5.2 m. Express the result to a proper number of significant figures.
Area of rectangle = Length × Breadth = 6·00 m × 5·2 m = 31·200 m2
As the number of significant figures in the least precise factor is two, therefore, the correct answer is 31m2.
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