Question

please solve it i will mark you as s brainliest reallly Q 19

Answer 1

Let the radius of the circle be r.

According to Question,

⇒ Circumference = Diameter + 30

⇒ 2πr = 2r + 30

⇒ 2 * (22/7) * r = 2r + 30

⇒ 44r = 14r + 210

⇒ 30r = 210

⇒ r = 210/30

⇒ r = 7

Therefore, the radius of the circle = 7 cm.

Hope it helps!

Answer 2

Here your answer goes

Step :- 1

Let the radius of a circle = r

Given ,

Circumference = Diameter + 30

We know that ,

⇒ Circumference of the circle = 2$\pi$r

=> Diameter of the circle = 2r

Step :- 2

Evaluate the value

$2\pi r = 2r + 30$

⇒ 2 * 22/7 * r = 2r + 30

⇒ 44r = 14r + 210

⇒ r(44 - 14) = 210

⇒ 30 r = 210

⇒ r = 210/30

⇒ r = 7

Therefore , radius of the circle is 7cm

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