Question

if the circumference of sheet is 154m find its radius.also fimd the area of the sheet take π=22/7

with formula please ​

Answer 1

Step-by-step explanation:

1. 2×22/7×r=154
2. 44/7×r=154
3. r=154×7/44
4. r=49/2
5. area of circle=2πr×r
6. 2×22/7×49/2×49/2
7. 3775m

Answer 2

$\rightarrow \: 2\pi \: r = 154m$

$\rightarrow \: r = \frac{154}{2\pi}$

$\rightarrow \: r = \frac{157 \times 7}{2 \times 22 \:} = 24.5m$

$now \: area \: of \: circular \: sheet \: \\ = \pi \: {r}^{2} = \frac{22}{7} \times 24.5 \times 24.5 \\ = 1886.5m$

$so.. \: the \: radius \: and \: \\ area \: of \: circle \: sheet \: \\ are \: 24.5m \: and \\ \: 1886 {m}^{2} respectively$