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The radius of a circle is stated as 2.12...

The radius of a circle is stated as 2.12 cm. Its area should be written as

A

`14 cm​^2`

B

`14.1 cm​^2 `

C

`14.11 cm^2 `

D

`14.1124 cm​^2 `

Text Solution

Verified by Experts

The correct Answer is:
B
Area `=pir^(2)=(22)/(7) xx (2.12)^(2)=(98.8768)/(7)`
`=14.125257=14.1 cm^(2)`
(after rounding off to 3 significant figures as in given data )
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