Question

13 )Calculate the circumference of the bangle shown in (Take = 31.4).​

Answer 1

Step-by-step explanation:

As we know that circumference of the circle is given as-

Circumference =2πr

Given:-

Circumference of the circle =31.4cm

∴2πr=31.4

⇒2×3.14×r=31.4

⇒r=5cm

Now again as we know that the area of the circle is given as-

Area =πr

2

⇒ Area =3.14×(25)

2

=78.5cm

2

Hence the radius and area of the circle is 5cm amd 78.5cm

2

respectively

Answer 2

Answer:

where is bangle....

circumfrence of a circle

$2\pi \: r$