Question

plz answer my question
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Answer 1

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Perimeter of shaded region = perimeter of semi circle ADC + perimeter of semi circle BFC + perimeter of semi circle AEB

$\textbf{ Now, finding perimeter}$
$\textbf{of semicircle ADC.}$

Radius = 2.1 cm

Perimeter of semi circle = πr

= 6.6 cm

$\textbf{Now, finding perimeter}$
$\textbf{of semicircle AEB. }$

Radius = 1.4 cm

Perimeter of semi circle = πr

= 4.4cm

$\textbf{Now, finding perimeter}$
$\textbf{of semicircle BFC.}$

Radius = 0.7 cm

Perimeter of semi circle = πr

= 2.2cm


$\textbf{Perimeter of shades region : }$

= (6.6 + 4.4 + 2.2)cm

= 13.2 cm

Answer 2

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Answer:

Perimeter of shaded region = perimeter of semi circle ADC + perimeter of semi circle BFC + perimeter of semi circle AEB

\textbf{ Now, finding perimeter} Now, finding perimeter

\textbf{of semicircle ADC.}of semicircle ADC.

Radius = 2.1 cm

Perimeter of semi circle = πr

= 6.6 cm

\textbf{Now, finding perimeter}Now, finding perimeter

\textbf{of semicircle AEB. }of semicircle AEB.

Radius = 1.4 cm

Perimeter of semi circle = πr

= 4.4cm

\textbf{Now, finding perimeter}Now, finding perimeter

\textbf{of semicircle BFC.}of semicircle BFC.

Radius = 0.7 cm

Perimeter of semi circle = πr

= 2.2cm

\textbf{Perimeter of shades region : }Perimeter of shades region :

= (6.6 + 4.4 + 2.2)cm

= 13.2cm

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