Question

नीता 20 cm त्रिज्या वाला एक वृत काटती है । इस वृत का
क्षेत्रफल कितना होगा ?Nita cuts a circle with radius
20 cm. What will be the area of this circle?
(TT=3.14)
1256 वर्गसैंटीमीटर Sq.cm
256 वर्गसैंटीमीटर Sq.cm
1052 वर्गसैंटीमीटर Sq.cm
1150 वर्गसैंटीमीटर Sq.cm​

Answer 1

Given : नीता 20 cm त्रिज्या वाला एक वृत काटती है ।

Nita cuts a circle with radius 20 cm

(π=3.14)

To Find :   वृत का क्षेत्रफल  .

 area of the circle

1256 वर्गसैंटीमीटर Sq.cm

256 वर्गसैंटीमीटर Sq.cm

1052 वर्गसैंटीमीटर Sq.cm

1150 वर्गसैंटीमीटर Sq.cm​

Solution:

 area of the circle = π ( Radius)²

π  = 3.14

Radius = 20 cm

 area of the circle = 3.14 x 20²

= 3.14 x 400

= 314 x 4

= 1256  वर्गसैंटीमीटर Sq.cm

वृत का क्षेत्रफल  .1256  वर्गसैंटीमीटर

 area of the circle1256   Sq.cm

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Answer 2

Given :- Nita cuts a circle with radius 20 cm. What will be the area of this circle ?

A) 1256 Sq.cm

B) 256 Sq.cm

C) 1052 Sq.cm

D) 1150 Sq.cm

Solution :-

we know that,

• Area of circle = π(radius)²

given that,

• radius = 20 cm.
• π = 3.14

putting values we get,

→ Area = 3.14 * (20)²

→ Area = 3.14 * 400

→ Area = 3.14 * 100 * 4

→ Area = 314 * 4

→ Area = 1256 cm² (A) (Ans.)

Hence , area of given circle will be 1256 cm².

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