Question

find the circumference of the circle whose area is 6.16 CM square​

Answer 1

Area of circle= πr²
6.16 = 22/7 × r²
6.16× 7/22= r²
1.96 = r²
1.4= r



Circumference of circle = 2πr
= 2× 22/7 × 1.4
= 8.8 cm


Hope it helps you !!!!!

Answer 2

Answer:

Circumference of Circle is 8.8 cm

Step-by-step explanation:

Given: Area of Circle = 6.16 cm²

To find: Circumference of circle

Area of Circle = 6.16 cm²

$\pi r^2=6.16$

$\frac{22}{7}\times r^2=6.16$

$r^2=6.16\frac{7}{22}$

$r^2=\frac{43.12}{22}$

$r^2=1.96$

$r=\sqrt{1.96}$

r = 1.4 cm

Circumference of Circle = $2\pi r$

                                        = $2\times\frac{22}{7}\times1.4$

                                        = 8.8 cm

Therefore, Circumference of Circle is 8.8 cm