(3) Represent the numbers√5 and √10 on a number line.plz tell fast ​

Question

(3) Represent the numbers√5 and √10 on a number line.plz tell fast

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Raelynn 1 month 2021-08-22T22:49:20+00:00 2 Answers 0 views 0

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    0
    2021-08-22T22:50:31+00:00

    Draw perpendicular AX at A on the number line and cut-off arc AB=1unit. Taking O as the centre and OB=5 as radius draw an arc cutting real line at C. Clearly, OC=OB=5 . Hence, C represents 5 on the number line.

    Construction

    Take a line segment AO = 3 unit on the x-axis. ( consider 1 unit = 2cm)

    Draw a perpendicular on O and draw a line OC = 1 unit.

    Now join AC with √10.

    Take A as center and AC as radius, draw an arc which cuts the x-axis at point E.

    The line segment AC represents √10 units.

    0
    2021-08-22T22:50:50+00:00

    Answer:

    We can do it by using Pythagoras Theorem.

    We can write √10 = √(9 + 1)

    => √10 = √(32 + 1)                  

    Construction

    1. Take a line segment AO = 3 unit on the x-axis.   (consider 1 unit = 2cm)    

    2. Draw a perpendicular on O and draw a line OC = 1 unit  

    3. Now join AC with √10.  

    4. Take A as center and AC as radius, draw an arc which cuts the x-axis at point E.

    5. The line segment AC represents √10 units.

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