Question

What is the perimeter of a semi circle with radius of 1cm?
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Answer 1

Answer:

5.14 cm

Step-by-step explanation:

Perimeter of circle= 2π r

= 2*3.14*1

= 6.28

Full circle = 6.28

Hence, semicircle = Half of circle + diameter

= 3.14 + 2

= 5.14 cm

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Answer 2

Perimeter of the semicircle is obtained using the formula r(π+2).
Radius r=14 cm
So, perimeter =14(π+2)..... where π=
7
22
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=2(22+14)=44+28=72 cm
Hence, the answer is 72 cm.