Question

find the circumference of a circle whose diameter is : 7m​

Answer 1

Answer:

• Circumference of the Circle is 22m

Step-by-step explanation:

According to the Question

It is given that,

• Diameter = 7m

we have to calculate circumference of the circle .

As we know that Circumference of Circle is calculated by

• Circumference = 2πr

On substituting the value we get

↠ Circumference = 2×22/7 × 7/2

↠ Circumference = 44/7 × 7/2

↠ Circumference = 44/2

↠ Circumference = 22m

• Hence, the circumference of the circle is 22 m.

Additional Information !!

$\begin{gathered}\boxed{\begin {array}{cc}\\ \quad \Large\underline{\bf Formulas\:of\:Areas:-}\\ \\ \star\sf Square=(side)^2\\ \\ \star\sf Rectangle=Length\times Breadth \\\\ \star\sf Triangle=\dfrac{1}{2}\times Breadth\times Height \\\\ \star \sf Scalene\triangle=\sqrt {s (s-a)(s-b)(s-c)}\\ \\ \star \sf Rhombus =\dfrac {1}{2}\times d_1\times d_2 \\\\ \star\sf Rhombus =\:\dfrac {1}{2}d\sqrt {4a^2-d^2}\\ \\ \star\sf Parallelogram =Breadth\times Height\\\\ \star\sf Trapezium =\dfrac {1}{2}(a+b)\times Height \\ \\ \star\sf Equilateral\:Triangle=\dfrac {\sqrt{3}}{4}(side)^2\end {array}}\end{gathered}$

Answer 2

Answer:

22m

Step-by-step explanation:

According to question:-

It is given that:-

• Diameter=7m

We have to calculate the diameter of the circle.

We know that the formula for circumference of the circle is :-

There are two formulas to calculate it;

• 2πr
• Or, πd

We will use πd first.

On substituting the values we get:-

$\large\red{\sf{ \implies\pi7m}}$

$\large\red{\sf{ \implies \frac{22}{7} \times 7m }}$

$\large \implies\boxed{ \boxed{ \sf{ \red{ 22m }}}}$

On using 2πr we get:-

• Radius=D/2

• Where D=diameter

• 7m/2

• 3.5m

$\large\red{\sf{ \implies2\pi r}}$

$\large \red{\sf{2 \times \frac{22}{7} \times 3.5 }}$

$\large\boxed{ \boxed{ \sf \red{\implies22m}}}$

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