Question

The diameter of a circle is 28 cm. Find its circumference. *

Answer 1

Answer:

87.92cm

Step-by-step explanation:

Here, diameter of circle is= 28 CM

this, the radius of circle=1/2 of diameter

=1/2×28

=14cm

Therefore the Radius of circle is 14cm

Now we have to find.,Circumference

Circumference of circle=2piR

=2x3.14x14

=87.92 CM.

This the circumference of circle is 87.92cm.

Hope it will helps you

Answer 2

Answer:

∴ Circumference of a circle is $88$ cm.

Step-by-step explanation:

In context with question asked,

• We have to find the circumference of a circle.
• It is given that the diameter of a circle = $28$ cm.
• Circle is a set of points arranged at an equal distance from the center of a circle.
• Diameter is twice the radius.

       ∴ Radius of a circle = $\frac{diameter }{2} = \frac{28}{2} =14$ cm

• Circumference is the outer boundary of a circle.
• The formula for circumference of a circle is given by,

     Circumference of a circle = $2\pi r$

                                          = $2\times \frac{22}{7} \times 14$

                                          = $2\times 22\times 2$

                                          = $88$ cm

• ∴ Circumference of a circle is $88$ cm.