Question

radius: 6 mm
diameter: 12 mm
area:
radius:
diameter: 24 cm

Explanation:

Step1: Recall area formula

The formula for the area of a circle is $A = \pi r^{2}$, where $r$ is the radius. Given $r = 6$ mm.

Step2: Calculate the area

$A=\pi\times(6)^{2}= 36\pi$ $mm^{2}\approx36\times3.14 = 113.04$ $mm^{2}$

Step3: Find radius for second - part

The relationship between the diameter $d$ and radius $r$ of a circle is $r=\frac{d}{2}$. Given $d = 24$ cm, so $r=\frac{24}{2}=12$ cm.

Answer:

Area: $113.04$ $mm^{2}$ (approx), Radius: $12$ cm