Evaluate: (frac{0.21 times 0.072 times 0.00054}{0.006 times 1.68 times 0.063})
-
A.
0.01286 -
B.
0.01285 -
C.
0.1286 -
D.
0.1285
Correct Answer: Option A
Explanation
(frac{0.21 times 0.072 times 0.00054}{0.006 times 1.68 times 0.063})
= (frac{9 times 10^{-10}}{7 times 10^{-8}})
= (1.2857 times 10^{-2})
= (0.012857 approxeq 0.01286) (to 4 s.f)