Question

3. Find square of (81) using column method.
4. Find the square root of the 2,209/324.
5. Write in standard form : (a) 0.009801 (b) 365100000
6. Simplify {(5)^-1 * (4)^-1}^2.
7. Find the square root of 76 upto three decimal place .
8. What should be subtracted from 5/6 to get -2/3?
9. Using Euler's formula , find the missing number:
FACES
8
VERTICES
6
EDGES
?
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Answer 1

Answer:

To find the square root of 81 , or √81 , we have two find one number, that when multiplying itself, equals to 81 . That number is 9→ (9⋅9=81) Therefore √81=9