Evaluate: \(\frac{0.21 \times 0.072 \times 0.00054}{0.006...
Evaluate: 0.21×0.072×0.000540.006×1.68×0.063
0.01286
0.01285
0.1286
0.1285
Correct answer is A
0.21×0.072×0.000540.006×1.68×0.063
= 9×10−107×10−8
= 1.2857×10−2
= 0.012857≊ (to 4 s.f)
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