Find the perimeter of the following: Given$\left( {\pi = \dfrac{{22}}{7}} \right)$
A circle with radius 8.4 m.
Last updated date: 24th Mar 2023
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Answer
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Hint: Here we go through by the formula of perimeter of the circle that is also known as the circumference of the circle whose formula is$2\pi r$.
Complete step-by-step answer:
Here in the question the radius of the circle is given as 8.4 m.
Radius, r=8.4 m
And we know that circumference of circle is $2\pi r$
i.e. perimeter =$2\pi r$
$
= 2 \times \dfrac{{22}}{7} \times 8.4 \\
= 44 \times 1.2 \\
$
=52.8 m
Hence the required perimeter of the circle with radius 8.4 m is 52.8 m.
Note: Whenever we face such types of problems we use the simple formula for finding the perimeter or circumference keeping in mind the units of radius that is given. Always gives your answer in that unit that question gives you.
Complete step-by-step answer:
Here in the question the radius of the circle is given as 8.4 m.
Radius, r=8.4 m
And we know that circumference of circle is $2\pi r$
i.e. perimeter =$2\pi r$
$
= 2 \times \dfrac{{22}}{7} \times 8.4 \\
= 44 \times 1.2 \\
$
=52.8 m
Hence the required perimeter of the circle with radius 8.4 m is 52.8 m.
Note: Whenever we face such types of problems we use the simple formula for finding the perimeter or circumference keeping in mind the units of radius that is given. Always gives your answer in that unit that question gives you.
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