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sqrt of 81+81+81+81+81+81+81
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24 Apr 2026, 00:48
24 Apr 2026, 00:48
Expert Reply
00:00
Question Stats:
60% (01:14) correct
40% (00:46) wrong based on 10 sessions
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\(\sqrt{81+81+81+81+81+81+81+81}=\)
\(\begin{aligned}
& A. 18 \sqrt{2} \\
& B. 36 \sqrt{2} \\
& C. 72 \\
& D. 162 \sqrt{2} \\
& E. 648
\end{aligned}\)
\(\begin{aligned}
& A. 18 \sqrt{2} \\
& B. 36 \sqrt{2} \\
& C. 72 \\
& D. 162 \sqrt{2} \\
& E. 648
\end{aligned}\)
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Re: sqrt of 81+81+81+81+81+81+81
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24 Apr 2026, 02:42
24 Apr 2026, 02:42
1
√(81+81+81+81+81+81+81+81) = √(8*81) = 9*√8 = 9*2*√2 = 18√2
The answer is A.
The answer is A.
