Question

the area of a circle whose circumference is 31,43cm​

Answer 1

Answer:

do the are formula and you will find the answer

Answer 2

Answer:

As we know that circumference of the circle is given as-

Circumference =2πr

Given:-

Circumference of the circle =31.4cm

∴2πr=31.4

⇒2×3.14×r=31.4

⇒r=5cm

Now again as we know that the area of the circle is given as-

Area =πr  

  ⇒ Area =3.14×(25)  

=78.5cm  

Hence the radius and area of the circle is 5cm amd 78.5cm  

 respectively

Step-by-step explanation:

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