Question

Find the circumference of wheel whose radius is 25 cm.​

Answer 1

Question

Find the circumference of wheel whose radius is 25 CM .

Solution

Given,

• the radius of the circle is 25 CM

what to find ?

• we have to find here the circumference of the wheel .

formula to be used ?

• 2πr

Answer

As the radius of circle is 25cm .

and the value of π is 22/7

to find the circumference of circle = 2πr

putting the values in the formula we get ;

=2× 22/7×25

= 44/7×25

= 157.14 cm ( approx)

so the required answer is 157.14 cm .

Additional information

what is circumference ?

=> the enclosing boundary of a curved geometric figure is known as perimeter or circumference .

=> it was mainly well defined in a circle .

How to solve these kind of questions ?

if the radius is given in any question and it is asking for perimeter you have to use the perimeter formula of the circle . which is 2πr and then put the value in the formula . and you will get the answer .