Question

Area of circle and how to find circumference

Answer 1

area of circle is

$\pi r {}^{2}$

How to find the circumference of a circle:

▪The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.

▪If a circle has a diameter of 4, its circumference is 3.14*4=12.56.

▪If you know the radius, the diameter is twice as large.

Answer 2

CIRCLE

1)It is an 2-D simple shaped figure.

2)It is a set of points that are equidistant from another given point.

3)It has following terms=>

a)Radius = It is the distance from the centre to the Circumference of circle

b)Diameter = It is the line that goes straight across the circle but it does pass through the center.

C) Circumference = It is the distance once around the circle.

Now,

Area of circle = πr^2

Circumference= 2πr

but Remember=>> π(pie) is an irrational number and it's value is taken as 3.14 for convinience in calculation.

thanks