Question

A circle has circumference 20.1
cm. What is the area of the​ circle? Use 3.14 for pie

Answer 1

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Answer:

Step-by-step explanation:

Given :

circumference of a circle is 20.1 cm

To find :

Area of circle

Formulae used :-

Area of circle = πr²

Circumference of circle is 2πr

Solution:

As we circumference of circle is 2πr            

So,

2πr = 20.1 cm

2 × 3.14 ×r = 20.1 cm

6.28 ×r = 20.1 cm

r = 20.1/6.28

radius = 3.2 cm

AREA OF CIRCLE = πr²

= 3.14 ×3.2 ×3.2

= 32.15cm²

So, area of circle is 32.15cm²