Question

Q1. What is the circumference of a circle of diameter 10 cm ? ( take u = 3.14).

Answer 1

Explanation:

Given:

A circle with -

Diameter = 10 cm

What To Find:

We have to -

Find the circumference of the circle.

Formula Needed:

The formula is -

$\bf C = 2 \pi r$

Abbreviations Used:

C = circumference

\piπ = pie (3.14)

r = radius

Solution:

Finding the radius.

We know that,

$\sf \implies r = \dfrac{d}{2}$

Where,

⟹d=diameter

Substitute the values,

$</p><p>\sf \implies r = \dfrac{10}{2}$

Divide 10 by 2,

$\sf \implies r = 5 \: cm$

Finding the circumference.

Using the formula,

$\sf \implies C = 2 \pi r$

Substitute the values,

$</p><p>\sf \implies C = 2 \times 3.14 \times 5$

Multiply the numbers,

$\sf \implies C = 31.4 \: cm$

Final Answer:

∴ Thus, the circumference of the circle is 31.4 cm.

Answer 2

Answer:

31•4 by taking π = 3•14.

Explanation:

Thanks