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Assoli18 [71]
2 years ago
6

The perimeter of a shape is 25.71 cm calculate the value of the radius X takes pie to be 3.142

Mathematics
1 answer:
Mariulka [41]2 years ago
3 0

Answer:

5 cm

Step-by-step explanation:

Given a semicircle with perimeter 25.71 cm, we are required to find the radius of the circle.

Circumference of a Semicircle

=Length of the Circular part+Length of the diameter

=\pi r+2r

If \: \pi=3.142, C=25.71\\Then:\\25.71=3.142r+2r\\r(3.142+2)=25.71\\5.142r=25.71\\r=25.71 \div5.142\\r=5cm

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