Question

if area is 154 cm square then what is radius and diameter​

Answer 1

Answer

$area \: of \: circle \: = \pi {r}^{2}$

$\pi {r}^{2} = 154$

$\frac{22}{7} \times {r}^{2} = 154$

${r}^{2} = 154 \times \frac{7}{22}$

22x7=154,cancel 154 by 22

${r}^{2} = 7 \times 7 = 49$

$r = \sqrt{49} = 7$

HENCE,Radius is 7 cm and diameter =2r .i.e-14 cm

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