Question

v) If circumference of a circle is 55cm, then what is its diameter?
$a) \frac{35}{2}$
$b) \frac{34}{4}$
$c)35cm$
$d)70cm$



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Answer 1

Answer:

Option a)

$\frac{35}{2}$

Step-by-step explanation:

Given,

Circumference of the circle = 55cm

Therefore,

By the problem,

$= > 2\pi r = 55$

$= > 2 \times \frac{22}{7} \times r = 55$

$= > r = 55 \times \frac{7}{22} \times \frac{1}{2}$

$= > r = \frac{35}{4}$

According to the question,

Diameter of the circle = 2 × radius

$= 2 \times \frac{35}{4}$

$= \frac{35}{2}$

Hence, the diameter of the circle is Option A:

$\frac{35}{2} (ans)$