Question

circumference of circle exceeds diameter is 30cm find radius of circle

Answer 1

Answer:

Step-by-step explanation:

let the radius of the circle be r cm Then ,

Diameter , D = 2r Cm

and Circumference = 2 πr Cm

it is given that the circumference exceeds the diameter by 30 cm that is

circumference = Diameter + 30 cm

2 πr = 2 ( r + 15 ) cm

Hence the radius of the circle is 7 cm

Thanks !!

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Answer 2

$\huge{\mathbf{\red{\underline{Hola\: Mate}}}}$

$\huge{\mathbf{\blue{\underline{Solution:-}}}}$

$circumference \: of \: the \: circle = d + 30$

$= 2\pi \: r = 2r + 30$

$= 2 \pi \: r - 2r = 30$

$= 2 \times \frac{22}{7} \times r - 2r = 30$

$= \frac{44}{7} \times r - 2r = 30$

$= \frac{44r}{7} - 2r = 30$

$= 30r = 210$

$= r = \frac{210}{30}$

$\large{\boxed{\boxed{\mathbf{\red{Radius= 7cm}}}}}$

$\large{\boxed{\boxed{\mathbf{\red{Hope\: It\: Helps}}}}}$

$\huge{\mathbf{\red{\underline{Thanks}}}}$