Math, asked by blacklightning, 4 months ago

If the radius of a circle is 3 cm, what is the sum of the central angles in the circle?

Answers

Answered by harsh32559

1

Circumference = 39.6 cm

We know:

Circumference of a circle = 2πr

⇒39.6 =2×

22

7

×r⇒

39.6×7

2×22

=r⇒r=6.3 cm

Also,

Area of the circle = πr2

=

22

7

×6.3×6.3=124.74 cm2

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