Math, asked by rnabusambya, 8 months ago

Perimeter of a semi circle is 90m what is radius

Answers

Answered by Anonymous
5

Given :

  • Perimeter of semi-circle = 90 m.

To find :

  • Radius of the semi-circle.

Solution :

  • Perimeter = 90 m.

Formula Used :-

{\boxed{\bold{Perimeter\: of\: semi-circle=\pi\:r}}}

Where ,

  • r = radius

According to the question,

\implies\sf{\pi\:r=90}

\implies\sf{\dfrac{22}{7}\times\:r=90}

\implies\sf{r=90\times\dfrac{7}{22}}

\implies\sf{r=28.64\:(approx)}

Therefore , the radius of the semi-circle is 28.64 ( approx ) m.

______________________

More information :-

Some formulas :-

• Perimeter of rectangle = 2(l+b)

• Area of rectangle = l × b

• Perimeter of square = 4 × side

• Area of square = side²

_______________________

Answered by silentlover45
0

  \huge \mathfrak{Answer:-}

\implies r = 28.64m.

\large\underline\mathrm{Given:-}

  • Perimeter of semi circle = 90m.

\large\underline\mathrm{To \: find}

  • Radius of the semi circle

\large\underline\mathrm{Using \: Formula}

  • perimeter of semi circle = πr

\large\underline\mathrm{Solution}

\implies πr = 90

\implies 22/7 × r = 90

\implies r = 90 × 7/22

\implies r = 28.64m.

\large\underline\mathrm{hence,}

\large\underline\mathrm{the \: radius \: of \: the \: semi \: circle \: is \: 28.64m.}

  \huge \mathfrak{Basic \: Information:-}

\implies perimeter of rectangle = 2(l + b)

\implies Area of rectangle = l × b

\implies perimeter of square = 4 × side

\implies Area of square = side²

\large\underline\mathrm{Hope \: it \: helps \: you \: plz \: mark \: me \: brainlist}

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