Math, asked by RAINBOWGIRL19, 4 months ago

3. Find the perimeter of the following figure.

Attachments:

Answers

Answered by JashanR
77

Answer:

\huge\colorbox{green}{Answer}

Given:-

\bold{\underline{r =  7cm}}

Proof:-

\sf{Perimeter \:  of  \: circle = 2\pi \: r}

\sf{⇒2 \times  \frac{22}{7}  \times 7 \times  \frac{1}{2}}

The given figure is in the form of a semicircle

\sf{⇒ \frac{2 \times 22}{2}}

\large\sf\fbox{⇒22 \: cm}

_________________________________________

\huge{\underline{\underline{\color{red}{Be\: brainly}}}}

Answered by MrHyper
279

\Huge\rm\blue{an{\mathfrak{S}}wer:}

{}

\bf{{\underline{Given}}:}

  • Radius of the semicircle = 7cm

\bf{{\underline{To~find}}:}

  • The Perimeter of the semicircle

\bf{{\underline{Solution}}:}

 \sf Perimeter \: of \: a \: semicircle = \pi r + diameter \: of \: the \: circle  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   \: \\  \sf  = \frac{22}{ \cancel{ \: 7 \: }}  \times  \cancel{  \: 7 \: } + (7 + 7) \:  \:  \:  \:  \:  \:  \:  \:  \: (diameter) \\  \sf = 22 + 14\:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \\  \sf =  \blue{ \underline{ \boxed{ \bf 36cm}}}\:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:

\bf\therefore{{\underline{Required~answer}}:}

  • Perimeter of the given semicircle is \bf\blue{\underline{\underline{36cm}}}
Similar questions