Question

Find the circumference of a circle whose diameter is 7cm​

Answer 1

Answer:

22 cm

Step-by-step explanation:

Circumference of circle= 2πr

Since Diameter=2r

r=diameter/2

=7/2

=3.5 cm

circumference = 2πr

=2×22/7×3.5

= 22 cm

Answer 2

Given :-

• A circle with centre O
• Diameter of circle = 7cm

To Find :-

• Circumference of the circle

Solution :-

Diameter of circle = 7cm

Radius of circle = $\frac{D}{2}$ = $\frac{7}{2}cm$

Circumference of circle = $\huge{\boxed{\purple{2πr}}}$

$\implies 2 \times \times \frac{22}{7} \times \frac{7}{2}$

$\implies {\cancel {2}} \times \frac{22}{ \cancel{7} } \times \frac{ \cancel {7}}{ \cancel {2} }$

$\implies22 \: cm$

$\large{\boxed{\purple{Circumference\:=\:22\:cm}}}$