Powers and Roots Practice Test 2

Question : 6 of 40

Marks: +1, -0

If the approximate square root of 80 is 8.94. What will be the value of

√20

Solution:

√80=8.94

(given)

∴√20=√{{20×4}/4}

=√{80/4}=8.94/2=4.47

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