Question

If diameter is 5.6cm then perimeter of circle is​

Answer 1

If diameter is 5.6cm then perimeter of circle is 17.59m

Answer 2

Answer :

The circumference of the circle is 17.6cm²

Step-by-step explanation :

Figure,

$\setlength{\unitlength}{1mm}\begin{picture}(50,55)\linethickness{0.4mm}\qbezier(45,30)(45,30)(5,30)\qbezier(25.000,10.000)(33.284,10.000)(39.142,15.858)\qbezier(39.142,15.858)(45.000,21.716)(45.000,30.000)\qbezier(45.000,30.000)(45.000,38.284)(39.142,44.142)\qbezier(39.142,44.142)(33.284,50.000)(25.000,50.000)\qbezier(25.000,50.000)(16.716,50.000)(10.858,44.142)\qbezier(10.858,44.142)( 5.000,38.284)( 5.000,30.000)\qbezier( 5.000,30.000)( 5.000,21.716)(10.858,15.858)\qbezier(10.858,15.858)(16.716,10.000)(25.000,10.000)\multiput(5,30)(20,0){3}{\circle*{1}}\end{picture}\put(-33,33){\bf\large 5.6\ cm}$

Given that,

$\underline{\pink{ \sf{Diameter = 2 \times Radius}}} \: \: \star$

Therefore,

$=\sf{\dfrac{5.6}{2}}$

$\sf{=2.8cm}$

As we know that,

$\underline{ \boxed{ \pink{ \sf{Circumference} = 2\pi \: r}}}\: \: {\star}$

$\sf{\leadsto \: 2 \times \dfrac{22}{7} \times 2.8}$

$\sf{ \leadsto \: 22 \times 7 \times 0.4}$

$\sf{\leadsto \: 8.8 \times 2}$

$\underline{ \boxed{ \purple{\bf{\leadsto \: 17.6}}}} \: \: \star$

$\underline{ \sf{ \therefore \:The \: circumference \: is \: 17.6 {cm}^{2} }}$