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Determine the square root of the 28 numb...

Determine the square root of the 28 number in geometric method .

Text Solution

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We know that `28=7xx4`

So, the required square root of 28 will be the mean-proportional of two line segments of length 7 cm and 4 cm .
here, the required mean-proportional =BD and by scale, BD=5.3 cm (approx.)
`therefore sqrt(28)=53`
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CALCUTTA BOOK HOUSE-CONSTRUCTION : DETERMINATION OF MEAN PROPORTIONAL -Exercise
  1. Determine the square root of the 28 number in geometric method .

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  2. The mean-proportional of 4 and 9 is

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  3. The mean-proportional sqrt(a) and asqrt(a) is -

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  4. By determing the mean-proportional there can be construted of area eq...

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  5. The area of a square equal to the area of a reactangle, the length and...

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  6. Determine the mean-proportinal of the line segments of 7.4 cm and 3.ba...

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  7. Determine the mean-proportinal of the line segments of 5.6 cm and 6.ba...

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  8. Find the values of the sqrt(19) by geometric method .

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  9. Find the values of the sqrt(23) by geometric method .

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  10. Find the values of the sqrt(11) by geometric method .

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  11. Find the values of the sqrt(29) by geometric method .

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  12. Find the square root of 21 by geometric method.

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  13. Find the value of sqrt(35) by geometric method.

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  14. Find the value of sqrt(31) by geometirc method.

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  15. Construct a rectangle of 12.8 cm and 5 cm and then construct a square...

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  16. Construct a rectangle of 2.2 cm and 4.4 cm and then construct a squar...

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  17. 5cm , 8cm and 11 cm at first draw a triangle . Later on, construct a r...

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  18. An isosceles triangle , the base of which is 8 cm and the length of ea...

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  19. An equilateral triangle each of whose sides is 8 cm at first draw a tr...

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  20. Construct a triangle of sides of lengths 5 cm , 8 cm and 11 cm . Also ...

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  21. Bisect a triangle by a striaght line drawn parallel to the base.

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