Question

find the circumference of a circle of the radius 15 CM

Answer 1

here r=15cm
we know that formula for circumference of the circle is 2πr
substituting in the formula with radius 15cm,we get
circumference,C=2*π*15
                          = 30πcm

Note: u can also substitute the value of π as 22/7 or 3.14 and get the answer as 94.2cm.

hope i helped u

Answer 2

Given:

We have given the radius of the circle is 15cm.

To Find:

We have to find the circumference of a circle?

Step-by-step explanation:

• The radius of the circle is given to us which is 15 cm. To calculate the circumference of the circle we will do the following step.
• Circumference of circle is given by the formula $2\pi r$
• We will put the values of pi and r in the above equation which is of the formula of the circumference of a circle.

       $\textrm{Circumference of circle}=2\times\frac{22}{7} \times15$

• Now we will multiply the terms of the numerator and do the simplification.

        $\textrm{Circumference of circle}=\frac{44}{7} \times15$

• Now multiply the remaining terms of the numerator.

       $\textrm{Circumference of circle}=\frac{660}{7}$

• Now by dividing the numerator term by denominator we get the circumference of a circle.

        $\textrm{Circumference of circle}=94.28$

Thus, the circumference of the circle is 94.28