Question

3. If the circumference of a circular sheet is 154 m, find its radius.
the sheet. (Take it =
22/7​

Answer 1

Given :

⬤ Circumference of Circular Sheet is 154 m .

To Find :

⬤ Radius of Circular Sheet .

Formula Used :

$\sf{Circumference=2\pi{r}}$

Solution :

According to the Formula :

$\dashrightarrow\sf{254=2\pi{r}}$

$\dashrightarrow\sf{154=2\times{\dfrac{22}{7}}\times{r}}$

$\dashrightarrow\sf{154=\dfrac{2\times{22}}{7}\times{r}}$

$\dashrightarrow\sf{r=154\times\dfrac{7}{2\times{22}}}$

$\dashrightarrow\sf{r=\dfrac{1078}{44}}$

$\dashrightarrow\sf{r=24.5}$

Therefore , The Radius of the Circular Sheet is 24.5 m.

Check :

154 = 2πr

154 = 2 × 22/7 × 24.5

154 = 2 × 22/7 × 245/10

154 = 5390/35

154 = 154

Hence Checked .

Answer 2

Answer:

Circumference2πr=154cm

⇒r = 154

2 × 22

7

= 154 × 7 =24.5cm

2 × 22

Area of the circleπr2=22/7×24.5×24.5=1886.50m2

Hope this is helpful for you.