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प्रश्न
If the radius of a semi-circular protractor is 7cm, then its perimeter is ______.
पर्याय
11 cm
14 cm
22 cm
36 cm
MCQ
रिकाम्या जागा भरा
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उत्तर
If the radius of a semi-circular protractor is 7cm, then its perimeter is 36 cm.
Explanation:
Given that,
Radius of semi-circle = 7 cm
Perimeter of semi-circular protractor = πr + 2r
= π × 7 + 2 × 7
= 22 + 14
= 36 cm
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