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प्रश्न
Find the perimeter of a semicircular protractor whose diameter is 14 cm.
उत्तर
Perimeter of a semicircular protractor = Circumference of semicircular protractor + diameter of semicircular protractor
`=1/2(2pi"r")+"d"`
`=pi"r"+"d"`
`=22/7xx7+14`
= 22 + 14
= 36 cm
Hence, the perimeter of a semicircular protractor is 36 cm.
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