Find the perimeter of figure, where $A E D$ is a semi-circle and $A B C D$ is a rectangle.W hen radius of semicircle is $10 cm$

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Solution

Diameter of semicircle is the width of rectangle
$\Rightarrow W i d t h = 2 (10) = 20 c m$
Perimeter of rectangle $= 20 + 20 + 20$
$= 60 c m$
Circumference of semicircle $= π r = π (10)$
$= 31.4 c m$
Let $P$ be the total perimeter
$P = 31.4 + 60 = 91.4 c m$

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Find the perimeter of figure, where AED is a semi-circle and ABCD is a rectangle.W hen radius of semicircle is 10cm

Diameter of semicircle is the width of rectangle ⇒ Width=2(10)=20 cmPerimeter of rectangle =20+20+20=60 cmCircumference of semicircle =πr=π(10)=31.4 cmLet P be the total perimeter P=31.4+60=91.4 cm

Find the perimeter of figure, where $A E D$ is a semi-circle and $A B C D$ is a rectangle.W hen radius of semicircle is $10 cm$

Diameter of semicircle is the width of rectangle
$\Rightarrow W i d t h = 2 (10) = 20 c m$
Perimeter of rectangle $= 20 + 20 + 20$
$= 60 c m$
Circumference of semicircle $= π r = π (10)$
$= 31.4 c m$
Let $P$ be the total perimeter
$P = 31.4 + 60 = 91.4 c m$