$\\sqrt{70}$ is approximately equal to ___.\na 80\nb 6\nc 7\nd 8
$\\sqrt{70}$ is approximately equal to ___.\na 80\nb 6\nc 7\nd 8
Answer
Explanation:
Step1: Recall perfect - square numbers
We know that (8^2=64) and (9^2 = 81).
Step2: Compare with 70
Since (64<70<81), (\sqrt{64}<\sqrt{70}<\sqrt{81}), that is (8 <\sqrt{70}<9). And (\sqrt{70}) is closer to (\sqrt{64}=8) than to (\sqrt{81}=9).
Answer:
D. 8