Introduction to significant figures and scientific notation

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Let $latex A=\sqrt{B}+\frac{C}{2}-\frac{sinQ}{4+D^{2}}$.

a) Calculate A when $latex B=7000$, $latex C=80.5$, $latex Q=60^{o}$, and $latex D=0.15$. Write down your full caculator display.

b) Write your answer in a) to 2 decimal places.

c) Write your answer in a) to 3 significant figures.

d) Write your answer in a) in the form $latex a \times 10^{k}$, where $latex 1\leq a< 10$.

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Answer:a) 123.701

b) 123.70

c) 124

d) $latex 1.23701\times10^{2}$

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Percentage error