3 years ago

Find the perimeter of this semi-circle with radius, r = 22cm. Give your answer rounded to 1 DP.

Mathematics

1 answer:

shepuryov [24]3 years ago

3 0

Answer:

69.1 cm

Step-by-step explanation:

Circumference of a circle

c = 2πr

Half of that would be a semi-circle

c = πr

c = π * 22

c = 69.115038379

Rounded

69.1 cm

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