3 years ago

Diagram NOT

Mathematics

1 answer:

horsena [70]3 years ago

3 0

Answer:

31.4 cm

Step-by-step explanation:

se the forumula of the circonference 2r*pi. We aready have the 2 times radius (20 cm) and pi, but we have to divide by 2 the result because it is a semicircle. so 20*3.14/2= 31.4 cm

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