Find the perimeter of semicircle whose diameter is 2.8 CM
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Answered by
3
Answer:
1/2 ×2pirR. perimeter of semicircle
Answered by
20
Answer:
radius=1.4
perimeter of a semicircle= perimeter of a circle/2 +2radius
=2πr/2 +2r
=πr+2r
=22/7 * 1.4 +2*1.4
=4.4+2.8
=7.2cm
therefore perimeter of a circle with diameter 2.8 cm is 7.2cm
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