Question

The area of a circle is $24.64$. $m^2$ What is the circumference of the circle ?

• A. $14.64m$
• B. $16.36m$
• C. $17.60m$
• D. $18.40m$

Answer 1

The correct option is C $17.60m$

The area of a circle is $24.64sqm.$
So, $\pi r^2=\frac{22\times r\times r}{7}=24.64m^{2}r=2.8cm2\pi r=\frac{22\times 2\times 2.8}{7}=17.6m$