Question

find the area of shaded region (using π=3.14)​

Answer 1

area of bigger circle - area of smaller circle = area of safed region

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Answer 2

$\huge{\pink{\underline{\underline{\bf{SoluTion:}}}}}$

Let's

The Small Circle be Inner Circle ⭕

Given, Radius of Inner Circle = 4cm

$→\;{\sf{πr²}}$

$→\;{\sf{3.14×4²}}$

$→\;{\sf{3.14×16}}$

$☞\;{\bf{50.24cm²}}$

✒️ Area of Inner Circle = $\green{\bf{50.24cm²}}$

Let's

The Bigger Circle be Outer Circle ⭕

Given, Radius of Outer Circle = 5cm

$→\;{\sf{πr²}}$

$→\;{\sf{3.14×5²}}$

$→\;{\sf{3.14×25}}$

$☞\;{\bf{78.5cm²}}$

✒️ Area of Outer Circle = $\green{\bf{78.5cm²}}$

Area of Shaded Region = Outer Circle Area - Inner Circle Area

➝ $78.5-50.24$

➝ $\bf{28.26cm²}$

◕➜ Area of Shaded Region = $\fbox\red{\sf{28.26cm²}}$

Hope It Helps You ✌️