Question

Priya drew a circle whose circumference is 25.12 cm. Clare drew a circle whose diameter is 3 times the diameter of Priya’s circle. What is the circumference of Clare’s circle?

Answer 1

Answer:

Step-by-step explanation:

Priya drew a cicumference=25.12cm

Clare drew a circle diameter=3 times

Circumference of Clare’s circle=25.12*3

=75.36

Answer 2

The circumference of Clare’s circle is 75 cm.

Step-by-step explanation:

Given : Priya drew a circle whose circumference is 25.12 cm. Clare drew a circle whose diameter is 3 times the diameter of Priya’s circle.

To find : What is the circumference of Clare’s circle?

Solution :

The circumference is given by, $C=\pi d$

Priya drew a circle whose circumference is 25 cm.

So, $25= \pi d$

$\Rightarrow\ d=\dfrac{25}{\pi}$

If Clare draw a circle whose diameter is 3 times the diameter or Priya’s circle.

The diameter of  Clare's circle is d'=3d

$d'=3\times \dfrac{25}{\pi}$

$d'=\dfrac{75}{\pi}$

The circumference of Clare’s circle is given by $C=\pi d'$

$\text{Circumference}=\pi \times\dfrac{75}{\pi}$

$\text{Circumference}=75\ cm$

Therefore, the circumference of Clare’s circle is 75 cm.

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