Question

locate root 4.2 on number line

Answer 1

draw a line AB 4.2 cm 
now extend 1 cm more towards B such that AC=5.2 cm
now  the mid point of AC is O=2.6 cm
with O is the centre draw a semicircle with radius =2.6cm
from B draw a perpendicular on AC.
let is meet the semicircle at point D.
now fom B as centre and BD as radius draw an arc that intersect the extended line at E.
the distance between BE is the required answer

Answer 2

Answer:

Step-by-step explanation:

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