Question

Locate √7 on number line,√9 on number line​

Answer 1

Answer:

Let O be the origin on the line l.

• Let A be on the line such that OA=1.
• Draw AB perpendicular to OA at A such that AB=1. Then.
• OB2=OA2+AB2=12+12=2 Thus OB=2 .

• Again draw CD prependicular to l such that CD=1. Then.

• OD2=OC2+CD2=2+1=3. Thus OD=3 .

• Hence OF=7 . With O as centre and OF as radius, cut l at G.

Answer 2

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Step-by-step explanation:

• Let O be the origin on the line l.
• Let A be on the line such that OA=1.
• Draw AB perpendicular to OA at A such that AB=1. Then.
• OB2=OA2+AB2=12+12=2 Thus OB=2 .
• Again draw CD prependicular to l such that CD=1. Then.
• OD2=OC2+CD2=2+1=3. Thus OD=3 .
• Hence OF=7 . With O as centre and OF as radius, cut l at G.

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