Question

Show the co-relation between area of a circle and a rectangle :( obtained by cutting the circle to unit triangles of equal size and placing them side by side to form a rectangle). 
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Answer 1

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AnsWer:-

★ The co - relation b/w area of a circle and a Rectangle.

First of all Draw a circle with 30° angle at centre. Then, cut 12 triangles out of Circle.

Now, take one triangle and cut it into two equal parts.

Now,

Collect all the triangle and put all of 11 triangle side by side and half piece of last triangle on both side. Then, We will get a Rectangular shape.

• The height of Rectangle is equals to the radius of Circle.
• The length of Rectangle is equals to the half of circumference of Circle = πr

Therefore, Area of Rectangle:-

Length × Breadth

Area of Rectangle = L × B = πr × r = πr²,

which is equals to area of Circle.

NOTE:- The length of Rectangle is not a straight line,

as the number of triangles increases, straightness in line will also increases.

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Answer 2

Answer:

the guy above got the best answer coppy his answer