Find the area of shaded region if radius of outer circle is 14cm and radius of inner circle 7 cm.​

1 thought on “Find the area of shaded region if radius of outer circle is 14cm and radius of inner circle 7 cm.​”

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   Area of shaded region = Area of outer circle – Area of inner circle

   = πR² – πr²

   = π(R² – r²)

   = π(14² – 7²)

   = π[(14+7)(14-7)] {using a²-b² identity}

   = π[(21)(7)]

   = π x 147

   [tex] = \frac{22}{7} \times 147[/tex]

   [tex] = 22 \times 21[/tex]

   [tex] = 462[/tex]

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