a protractor is a semi circle of radius 6.1 cm. what is the perimeter of the protractor?
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hiii!!!
here's Ur answer...
given the radius of the semi circle protractor = 6.1cm
therefore diameter of the semi circle protractor = 6.1 × 2 = 12.2cm
perimeter of the protractor = (πd/2)+d
= [(22/7 × 12.2)/2] + 12.2
= 268.4/7 × 2/1
= 536.8/7 +12.2/1
= 536.8/7 + 85.4/7
= 536.8+85.4/7
= 622.2/7cm
hope this helps..!!
here's Ur answer...
given the radius of the semi circle protractor = 6.1cm
therefore diameter of the semi circle protractor = 6.1 × 2 = 12.2cm
perimeter of the protractor = (πd/2)+d
= [(22/7 × 12.2)/2] + 12.2
= 268.4/7 × 2/1
= 536.8/7 +12.2/1
= 536.8/7 + 85.4/7
= 536.8+85.4/7
= 622.2/7cm
hope this helps..!!
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