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© examsnet.com
Question : 12
Total: 26
In a circle of diameter 44 cm, the length of a chord is 22cm. What is the length of minor arc of the chord?
[NDA I 2019]
484
21
cm
242
21
cm
121
21
cm
44
7
cm
Validate
Solution:
(A)
Given diameter of circle = 44 cm ⇒ radius = 22 cm
Length of chord = 22 cm
Let AB be the given chord
From figure, it is clear that ∆OAB is equilateral triangle
∴ length of arc AB (minor) =
1
6
(Perimeter of circle)
=
1
6
( πD)
=
1
6
×
22
7
× 44
=
484
21
cm
© examsnet.com
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