Math, asked by yadavpandit764, 11 months ago

find the radius of a circle whose circumference 15 CM​

Answers

Answered by warylucknow
5

Answer:

The radius of the circle is 2.39 cm.

Step-by-step explanation:

The formula to compute the circumference of a circle is:

Circumfmerence=2\pi r

It is provided that the circumference is 15 cm.

Compute the value of radius, r as follows:

Circumference=2\pi r\\15=2\pi r\\r=\frac{15}{2\pi}\\ =\frac{15}{2}\times\frac{7}{22} \\=2.39

Thus, the radius of the circle is 2.39 cm.

Answered by Choudharipawan123456
4

Answer:

The radius of the circle is 2.39 cm.  

Step-by-step explanation:  

In context to the question asked,    

We have to find the radius of a circle,  

As per data given in the question,    

We have,  

Circumference = 15 cm  

For calculating radius,  

The formula to be used for,  

Circumference = 2\pi r  

By substituting the values,  

$=> 15 = 2\times \frac{22}{7}\times   r

Expressing 2\times \frac{22}{7} as a single fraction,

$=> 15=\frac{2\times 22}{7}\times r

Multiply 2 and 22 to get 44,

$=> 15=\frac{44}{7} r

Swap sides so that all variable terms are on the left-hand side.

$=> \frac{44}{7}\times r =15

Multiply both sides by \frac{7}{44}, the reciprocal of \frac{44}{7}.

$=> r=\frac{15\times 7}{44}

Multiply 15 and 7 to get 105,

$=> r = \frac{105}{44}

$=> r = 2.39cm

Hence radius of the circle is 2.39 cm.

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