Math, asked by vaishnavi962735, 1 year ago

the ratio of circumference and area of circle is 2:7 what is its circumference​

Answers

Answered by vatsarnav17
1

Answer:

7 cm

Step-by-step explanation:

2/7 = 2πr/2πr*r

1/7 = 1/r. (2 devides 2 of 2πr and r of 2πr

r=7. devides r of 2πr*r bcoz r is same as it is the same circle)

Answered by shouryavirjain
0

Answer:

\boxed{\text{Answer: Circumference = 44 units}}

Step-by-step explanation:

\frac{\text{Circumference}}{\text{Area}} = 2:7\\\\\boxed{C = 2 \text{ x } \pi \text{ x } r}\\\\\boxed{A = \pi \text{ x } r^2}\\\\\text{Therefore, } \frac{2 \text{ x } \pi \text{ x } r}{\pi \text{ x } r^2} = \frac{2}{7}\\\\\frac{2}{r} = \frac{2}{7}\\\\\boxed{r = 7}\\\\C = 2 \pi r\\\\= 2 \text{ x } \frac{22}{7} \text{ x } 7\\\\\boxed{\text{Answer = 44 units}}

Hope this helps!

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