If the diameter of the circle is 5 cm, what is the circumfrence and area of the figure?

Question

39118 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-12-26T05:21:48

The Circumference of the circle is $15.7 c m$ $15.7 cm$ and Area is $19.625 c m$ $19.625 cm$

We know that,

Circumference of Circle $= 2 π r$ $= 2pir$

and

Area of Circle $= π r^{2}$ $= pir^2$

The radius here is 2.5 cm because radius is the half of diameter. The value of $π$ $pi$ is 3.14

Now,

Circumference of Circle:

$= 2 \cdot 3.14 \cdot 2.5$ $= 2*3.14*2.5$

$= 6.28 \cdot 2.5$ $= 6.28*2.5$

$= 15.7 c m$ $= 15.7 cm$

Area of Circle:

$= 3.14 \cdot {(2.5)}^{2}$ $= 3.14*(2.5)^2$

$= 3.14 \cdot 6.25$ $= 3.14 * 6.25$

$= 19.625 c m$ $= 19.625 cm$