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Find the circumference and area of circle with the radius 1.4 metres.
Given: The radius of circle, $r=1.4\ meter$
To do: To find the circumference and the area of the circle.
Solution:
Radius of the circle, $r=1.4\ m$
Circumference of the circle $=2\pi r$
$=2\times\frac{22}{7}\times1.4$ [$\because \pi=\frac{22}{7}$]
$=8.8\ m$
Area of the circle $=\pi r^{2}$
$=\frac{22}{7}\times1.4\times1.4$
$=6.16\ m^{2}$
Thus, The circumference of the circle is $8.8\ m$ and the area of the circle is $6.16\ m^{2}$.
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