perimeter of semicircle
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Answer:
πr
Step-by-step explanation:
We know that 2πr is the circumference of the circle. So half of it is semicircle:
= 2πr/2
= πr
Answer:
((2 × 22/7 × R)/2) + (R×2)
Step-by-step explanation:
R means radius
R × 2 = Diameter