Question

Find the area of a circle with a circumference of 6.28units.
reply fast and give right answer then I will mark you brilliant​

Answer 1

Answer:

area of circle = πr^2

circumference of circle = 2π r

6.28= 2*3.14*r

r=1 unit

area of circle =3.14 sq.units

Answer 2

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$\mathtt{\huge{\underline{\red{Answer\: :}}}}$

$\: \bigstar \green{ \bold{ \underline{ \underline{step \: by \: step \: explaination : }}}}$

$\blue\sf{Given} \begin{cases} \: circumference =6.28units \\ \\ area \: of \: a \: circle=? \end{cases}$

$\: \\ \quad \implies \displaystyle \tt{circumference \: of \: the \: circe = 2 \pi \: r}$

$\: \quad \implies \displaystyle \tt{6.28} = 2\pi \: r$

$\: \: \quad \implies \displaystyle \tt{2\pi \: r = 6.28}$

$\: \: \quad \implies \displaystyle \tt{\pi r} = 3.14$

$\: \: \quad \implies \displaystyle \tt{r = \frac{3.14}{3.14} = 1units}$

$\: \: \\ \quad\implies \displaystyle \tt{area \: of \: a \: circle = \pi {r}^{2} }$

$\: \: \\ \quad \implies \displaystyle \tt{area \: of \: a \: circle = 3.14 \times {(1)}^{2} }$

$\: \: \\ \quad \implies \displaystyle \tt{area \: of \: a \: circle = 3.14 \: units}$

$\: \: \red \bigstar \boxed{ \underline{ \underline{ \sf \: { \: area \: of \: a \: circle = 3.14 \: units}}}}$