Question

Find the length of arc whose central angle is 180° and perimeter of circle is 64 cm​

Answer 1

Answer:

Hi!

Here the central angle is just half of the whole circle...

Therefore,

64÷2 = required arc

=32

Answer:32

pls appreciate the efforts and mark this answer as Brainliest answer pls

Answer 2

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Question:-

• Find the length of arc whose central angle is 180° and perimeter of circle is 64 cm

${\bf{\underline{\red{Answer}}}}$

• $\tt{Circumference\:of\:circle \:= \:64cm }$
• $\tt\implies{2πr \:= \:64}$

Arc length is :-

• $\tt\implies{l \:= \:(θ/360°) ⋅ \:2πr }$ㅤ

ㅤSubstitute θ = 180° and 2πr = 64.

• $\tt\implies{ l \:= \: (180°/360°) ⋅ \:64 }$
• $\tt\implies{ l \:= \:(1/2) ⋅ \:64 }$ㅤ
• $\tt\implies{ l \:= \:32 cm}$

ㅤㅤㅤ${\bf{\underline{\purple{So\:the\: Answer\:is\:32\:cm}}}}$

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