Question

50 points

solve it ​

Answer 1

Answer: R = 5 cm, Ar. = 78.5 cm^2

Step-by-step explanation: [tex]2 \pi r=31.4\\2r=314*100/314*10\\so, r=5\\\\Area= \pi r^2=314*5*5/100\\=7850/100=78.5cm^2.

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Answer 2

Answer:

We know that circumference = 2πr

Circumference = 31.4 cm

2πr =31.4

2×3.14 × r = 31.4

r=31.4/2×3.14

r= 5 cm

Area = πr²

=3.14×5×5

=78.5 cm²

Radius of the circle = 5 cm

Area of the circle = 78.5 cm²

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