1.

If the perimeter of a semi circular protractor is 108 cm than find its diameter

Answer» HEYA !!




PERIMETER of semi CIRCULAR protestor = 108




( πR + 2R ) = 108




R ( π + 2 ) = 108



R ( 22/7 + 2 ) = 108




R ( 22 + 14 ) = 108 × 7





R ( 36 ) = 756




R = 756/36



R = 21 cm.



Hence,


RADIUS ( R ) = 21 cm.


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