Question

The sum of circumference and the radius
of a circle is 51 cm. Find the radius of
Circle.​

Answer 1

Answer:

sum of circumference and the radius  = 2πr + r = 51 cm

r = 51/(1+2π) = 0.00700260881

Step-by-step explanation:

Answer 2

Given:

• The sum of circumference and the radius of a circle is 51 cm.

To Find:

• Radius of circle

Solution:

${ \underline{ \boxed {\bf{Circumference \: of \: circle = 2\pi r }}}} \: \red \star$

$\sf : \implies2\pi r + r = 51 \\ \\ \sf : \implies r(2\pi + 1) = 51 \\ \\ \sf : \implies r \bigg(2 \times \frac{22}{7} + 1 \bigg) = 51 \\ \\ \sf : \implies r \times \frac{51}{7} = 51 \\ \\ \sf : \implies \red{\underline{r = 7 \: cm}} \: \pink{ \star}$

Hence,

• Radius of circle is 7 cm

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