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Q.

What is the area of a circle whose diameter is 1.4 cm?


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a

1.54 cm2

b

0.77 cm2

c

6.16 cm2

d

None of these 

answer is A.

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Detailed Solution

We have been given,
Diameter = 1.4 cm.
We know, the area of the circle =πr2.
As we know, radius is half of the diameter,
Substituting the values,
 ⇒πd22  ⇒2271.422  ⇒1.54cm2 Therefore, the area is 1.54cm2.
Hence, option 1 is correct.
 
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