Question

13) Find the diameter of a circular drum has which has a circumference of 2.2 m.​

Answer 1

Answer:

✮Formula used:

Circumference of the circle = 2πr

✮Solution:

Circumference = 2.2m

$⇒2\pi r = 2.2m$

$⇒2 \times \frac{22}{7} \times r = 2.2m$

$⇒r = 2.2 \div \frac{44}{7}$

$⇒r = \frac{22}{10} \times \frac{7}{44} \\ \\ ⇒r = \frac{154}{440} \\ \\ ⇒r = 0.35m$

Thus, The radius of the circle is 0.35m

Diameter = 2 × Radius

⇒ Diameter = 2×0.35m = 0.7m

Therefore, The diameter of the circle is 0.7m

Answer 2

Answer :-

• The diameter of the drum is 0.7m.

Step-by-step explanation :

To Find :-

• The diameter of a circular drum.

Solution:

Given that,

• The circumference of a circular drum = 2.2m

As we know that,

Circumference of circle = 2πr,

=> 2πr = 2.2

=> 2 × 22/7 × r = 2.2

=> 44/7 × r = 2.2

=> r = 2.2 × 7/44

=> r = 15.4/44

=> r = 0.35

Therefore, the radius of the drum is 0.35m.

According the question,

• The diameter of the drum

As we know that,

Diameter = 2 × radius,

=> Diameter = 2 × 0.35

=> Diameter = 0.7

Hence,

• The diameter of the drum is 0.7m.

Formulas used :-

• Circumference of circle = 2πr
• Diameter of circle = 2 × radius.