Question
Find the best decimal approximation that your calculator allows. Begin by making a mental estimate.$$\sqrt{8.9 \pi^{2}+1}-3 \pi$$
Step 1
We know that $\pi$ is approximately equal to 3 and 8.9 is close to 9. So, we can rewrite the given expression as: $$\sqrt{9 \times (3^{2})+1}-3 \times 3$$ Show more…
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