(A) Given,the area of the circle $A = 154 \, cm^2$.The formula for the area of a circle is $A = \pi r^2$,where $r$ is the radius.Substituting the valu

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(A) Given,the area of the circle $A = 154 \, cm^2$.The formula for the area of a circle is $A = \pi r^2$,where $r$ is the radius.Substituting the value: $154 = \frac{22}{7} \times r^2$.$r^2 = 154 \times \frac{7}{22}$.$r^2 = 7 \times 7 = 49$.$r = \sqrt{49} = 7 \, cm$.The perimeter (circumference) of the circle is given by $C = 2 \pi r$.$C = 2 \times \frac{22}{7} \times 7$.$C = 2 \times 22 = 44 \, cm$.

Class 10 Mathematics Areas Related to Circles Mix Examples - Areas Related to Circles

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If the area of a circle is $154 \, cm^2$,then its perimeter (circumference) is (in $cm$):

A
$44$
B
$22$
C
$11$
D
$55$

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Areas Related to Circles

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Mix Examples - Areas Related to Circles

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If the area of a circle is $154 \, cm^2$,then its perimeter (circumference) is (in $cm$):

Similar Questions

The union of a chord of a circle and its corresponding arc is called $\ldots \ldots \ldots \ldots$

In the figure, a circle of radius $7.5 \, cm$ is inscribed in a square. Find the area of the shaded region (Use $\pi = 3.14$) (in $cm^2$).

Find the area of a sector of a circle of radius $21 \, cm$ and central angle $120^{\circ}$. (in $cm^{2}$)

In $\odot(O, 6)$, $\widehat{ABC}$ is a major arc and $m \angle AOC = 60^{\circ}$. Then, the length of major $\widehat{ABC}$ is ........... (in $\pi$)

Area of a sector of a circle of radius $36 \, cm$ is $54 \pi \, cm^{2}$. Find the length of the corresponding arc of the sector (in $cm$). (in $pi$)

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