Math, asked by AdityaMeshram8, 1 year ago

Represent √5.2 on number line

Answers

Answered by amitnrw
8

Given :  √5.2

To Find : Represent √5.2 on number line

Solution:

Draw a number line  .

Mark a  point  A on - 5.3  on number line

& mark a point B on 1 on number line

Draw  perpendicular bisector of A & B which cuts number line at M

Draw a semi circle taking M as center & MA = MB radius

Draw  a perpendicular at MO   ( O being 0 )

which intersect  drawn semicircle at C

Taking O as center & compass width = OC , draw an  arc on right side of Zero

Intersecting number line at P

P is  √5.2  on number  Line

Verification

AB = 5.2 + 1 = 6.2

Radius = MA =  MB = MC  = 6.2/2  = 3.1

OM  =   MB  - OB  = 3.1  - 1   = 2.1

OC² =  MC² - MO²

=> OC² = (3.1)² - ( 2.1 )²

Using a² - b² = (a + b )(a - b)

=>  OC² = (5.2) (1)

=> OC = √5.2

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