Question

If the area of circle is 385cm. Find the circumfrence​

Answer 1

Heya mate!!

Area of a circle is

$\pi {r}^{2}$

$\pi {r}^{2} = 385 {cm}^{2}$

$\frac{22}{7} \times {r}^{2} = 385 {cm}^{2}$

${r}^{2} = 385 \times \frac{7}{22}$

${r}^{2} = 2695 \div 7$

${r}^{2} = 122.5$

$r = 11.07$

Hope it helps u dear✌️✌️

Answer 2

Answer:

circumference of circle equals to 69.57

Step-by-step explanation:

area of circle =385

area =πr²

385=22/7×r²

r²=385×7/22

r²=122.5

r=√122.5

r=11..068

circumcircumference of circle is equals to 2πr

=22/7×2×11.068

=69.57