Question

The circumference of a circle is 62.8 cm. Find the radius of the circle?
(Take pi = 3.14)

Answer 1

GIVEN :-

• The circumference of circle is 62.8 cm.
• π = 3.14.

TO FIND :-

• The radius of the circle.

SOLUTION :-

As we know that circumference or perimeter of circle is given by,

✭ circumference of circle = 2πr.

➟ 62.8 = 2 × 3.14 × r

➟ 62.8 = 6.28 × r

➟ r = 62.8/6.28

➟ r = 10 cm.

Hence the radius of circle is 10 cm.

$\rule{250}{3}$

As we know that circumference or perimeter of circle is given by,

✭ circumference of circle = πd.

⇻ 62.8 = 3.14 × d

⇻ d = 62.8/3.14

⇻ d = 20 cm.

✪ Finding Radius of the circle,

➙ r = d/2

➙ r = 20/2

➙ r = 10 cm.

Hence the radius of circle is 10 cm.

Answer 2

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GIVEN :-

The circumference of circle is 62.8 cm.

π = 3.14.

TO FIND :-

The radius of the circle.

SOLUTION :-

As we know that circumference or perimeter of circle is given by,

✭ circumference of circle = 2πr.

➟ 62.8 = 2 × 3.14 × r

➟ 62.8 = 6.28 × r

➟ r = 62.8/6.28

➟ r = 10 cm.

Hence the radius of circle is 10 cm.

As we know that circumference of circle is

✭ circumference of circle = πd.

⇻ 62.8 = 3.14 × d

⇻ d = 62.8/3.14

⇻ d = 20 cm.

✪ Finding Radius of the circle,

➙ r = d/2

➙ r = 20/2

➙ r = 10 cm.

$\large{\boxed{\bf{10cm }}}$

Hence the radius of circle is 10 cm.

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