Question

The circumference of a circle is 22m find the area of its quadrant in cm

Answer 1

Step-by-step explanation:

HINT :

Circumference of the circle =2πr

Area of quadrant =1/4πr^2

we have to change m to cm

22×100cm

Answer 2

Answer:

The circumference of a circle is 22m the area of its quadrant is $9.61*10^{4} cm^{2}$

Step-by-step explanation:

A circle is a plane figure whose boundary (circumference) consists of points equidistance from a fixed point (center) as shown in the figure

The circumference of a circle of radius $r$ is given by the formula

circumference $=2\pi r$

The area of a circle is $A=\pi r^{2}$

from the question, it is given that

the circumference is equal to $22m$

⇒

$2\pi r=22\\r=22/2\pi \\r=3.50m$

the quadrant of a circle is the shaded region in the figure which is

one-fourth of a circle

area of a quadrant is = $\pi r^{2}/4$

$=\pi *3.5^{2}/4= 9.61m^{2}=9.61*10^{4}cm^{2}$