Question

Exercise 16D
1 Find the circumference of each of the circles with the following diameters,
a. 8cm​

Answer 1

Answer:-

Given that, $\it d = 8 \ cm$.

We know,

$\it C = 2 \pi r = d \pi$

(since, $\it d = 2r$).

∴ $\it C = 8 \times \pi = 8 \times 3.141$

⇒ $\it C = 25.128 \ cm$.

So, the circumference of the circle is about 25.13 cm.

More:

• A circle is a collection of all points from a point present in same distance.
• It has many parts, viz., radius, diameter, chord, arc, secant, sectors, etc.