Given that the logarithm of a number is (bar{1}.8732), find, correct to 2 significant figures the square root of the number.
-
A.
0.29 -
B.
0.75 -
C.
0.86 -
D.
0.93
Correct Answer: Option C
Explanation
Let the number = d.
(log d = bar{1}.8732)
(log sqrt{d} = frac{bar{1}.8732}{2})
= (frac{bar{2} + 1.8732}{2})
= (bar{1}.9366)
(therefore sqrt{d} = Antilog (bar{1}.9366))
= 0.86