Radius of a circle is 7 cm- then find the perimeter of circle given Use -22-7 -A- 14 cmB- 22 cmC- 28 cmD- 44 cm

The correct option is D 44 cmPerimeter of circle = Circumference of circle = 2×pi×r = nbsp;2×22/7×7 = 44 cm Perimeter of circle is 44 cm. nbsp; ...

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Standard VIII

Mathematics

Circumference of Circle

Radius of a c...

Question

Radius of a circle is 7 cm, then find the perimeter of circle given (Use $π$ = $\frac{22}{7}$ ).

14 cm

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22 cm

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28 cm

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44 cm

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Solution

The correct option is D 44 cm
Perimeter of circle = Circumference of circle
= 2 $\times$ pi $\times$ r
= 2 $\times$ $\frac{22}{7}$ $\times$ 7 = 44 cm

Perimeter of circle is 44 cm.

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OR
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Radius of a circle is 7 cm, then find the perimeter of circle given (Use π = 227).

The correct option is D 44 cmPerimeter of circle = Circumference of circle = 2×pi×r = 2×227×7 = 44 cm Perimeter of circle is 44 cm.

Radius of a circle is 7 cm, then find the perimeter of circle given (Use $π$ = $\frac{22}{7}$ ).

The correct option is D 44 cm
Perimeter of circle = Circumference of circle
= 2 $\times$ pi $\times$ r
= 2 $\times$ $\frac{22}{7}$ $\times$ 7 = 44 cm

Perimeter of circle is 44 cm.