Question

Find the circumference and area of a circle of diameter $56m$.

Answer 1

Diameter of circle $=56m$

Radius of circle $=\frac{56}{2}$

$=28m$

Therefore,

Circumference of circle

$=2\pi r=2\times \frac{22}{7}\times 28=176m^2$

Also,

Area of circle

$=\pi r^2=\frac{22}{7}\times {\left(28\right)}^2=2464m^2$