the perimeter of semi circle is 18cm. find the radius
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Step-by-step explanation:
perimeter of semicircle =18cm
formula of semi cicle =2πr
according to question
perimeter of semicircle =18cm
2πr=18cm
2(22/7)r=18
r=18(7)/2(22)
r=612/44
by solving the equation
r=12/11
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