Question

As done above if we divide the circle in 64 sectors, and arrange these sectors. It
gives nearly a rectangle (Fig 11.37).
un cicik
Fig 11.37
What is the breadth of this rectangle? The breadth of this rectangle is the radius of the
circle, i.e., 'r'.
As the whole circle is divided into 64 sectors and on each side we have 32 sectors, the
length of the rectangle is the length of the 32 sectors, which is half of the circumference
(Fig 11.37)
Area of the circle = Area of rectangle thus formed = 1xb
- (Half of circumference) x radius
1
- x2ar
2
xr=tr
So, the area of the circle = ir​

Answer 1

Answer:

As done above if we divide the circle in 64 sectors, and arrange these sectors. It

gives nearly a rectangle (Fig 11.37).

un cicik

Fig 11.37

What is the breadth of this rectangle? The breadth of this rectangle is the radius of the

circle, i.e., 'r'.

As the whole circle is divided into 64 sectors and on each side we have 32 sectors, the

length of the rectangle is the length of the 32 sectors, which is half of the circumference

(Fig 11.37)

Area of the circle = Area of rectangle thus formed = 1xb

- (Half of circumference) x radius

1

- x2ar

2

xr=tr

So, the area of the circle = ir