Question

find the circumference of a circle which diameter is 10.5cm​

Answer 1

Answer:

Given diameter of a circle is d=10.5 m

As we know that

Circumference of a circle with diameter d is πd

⟹ Circumference of a circle is

7

22

×10.5=33 m

Step-by-step explanation:

hope you are understand

Answer 2

Given :-

• diameter of the circle = 10.5 cm

To Find :-

• circumference of the circle ?

Solution :-

we have,

diameter = 10.5 cm

and

$\bold{radius = \frac{diameter}{2} } \\ \\ \bold{ \implies \cancel \frac{10.5}{2} } \\ \\ \bold{\implies 5.25}$

so, radius = 5.25cm

and we know that,

$\boxed{ \bold{circumference \: of \: circle = 2\pi r}}$

$\bold{: \implies 2 \times \frac{22}{ \cancel7} \times \cancel{5.25}} \\ \\ \bold{: \implies 2 \times 22 \times 0.75} \\ \\ \bold{: \implies 33 \: cm } \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

hence, circumference of the circle is 33cm