Find the perimeter
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Answer:
12pi......
Step-by-step explanation:
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Answer:
37.68 cm
Step-by-step explanation:
We can see that there are 4 semicircles
To calculate the perimeter of the smaller semi-circle:
Radius = 4/2 = 2 cm
Perimeter = πR = 3.14×2 = 6.28 cm
Perimeter of 3 such semicircles = 3×6.28 = 18.84 cm
∵ the diameter of 3 semicircles together make a big semicircle
∴ radius of big semicircle = 4+2 = 6 cm
Perimeter = 3.14 × 6 = 18.84 cm
Total perimeter = 18.84+18.84 = 37.68 cm