Question

plz solve 9th question fast....​

Answer 1

Answer:

it isn't Chinese it's maths

Answer 2

Area of the circle =

=$\pi \: {r}^{2}$

Solution

144π = π r^2

144π/π = r^2

144 = r^2

√144 = r

12= r

Circumference = 2πr

= 2x π x 12

= 24 π