Question

fund the radius of the circle whose circumference is 154 cm (take π=22 /7​

Answer 1

Answer:

c= 2π r

154=2×22/7×r

154×7=22×2r

r=49/2

r=24.5 answer

Answer 2

Given : Circumference of a circle is 154cm.

To Find : Radius of the circle.

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As we know that :

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$\underline{\boxed{\sf\purple{\bigstar \: circumference \: of \: the \: circle \: = 2\bold{\pi}r}}}$

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Here, circumference of the circle is given. So, we gonna find radius of the circle by applying this formula.

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Put the values and solve -

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$\tt:\implies \: 2\bold{\pi}r \: = 154 \\ \\ \\ \tt:\implies \: 2 \times \frac{22}{7} \times r = 154 \\ \\ \\ \tt:\implies \: r = \frac{\cancel154 \times 7}{2 \times\cancel 22} \\ \\ \\ \tt:\implies \: r = \frac{7 \times 7}{2} \\ \\ \\ \tt:\implies \:r = \frac{49}{2} \\ \\ \\ \tt:\implies \: r = \underline{\boxed{\tt\purple{24.5cm}}}\bigstar \\ \\ \\ \\ \sf\therefore{\underline{Hence, \: the \: radius \:of \: the \: circle \: is \: \bold{24.5cm}}}$