Question

draw a circle whose circumference is 42 CM​

Answer 1

Answer:

Given: The circumference of the circle is 42 cm.

Let the radius and diameter of the circle are r and d, respectively.

We know that,  

Circumference =2πr

∴2πr=42

⇒2(  

7

22

​  

)r=42

⇒r=  

22

147

​  

≈6.68 cm

Since, the diameter of the circle is twice of it radius.

∴d=2r

⇒d=2(  

22

147

​  

)=  

11

147

​  

≈13.36

 

Thus, the diameter of the given circle is  

11

147

​  

 cm or 13.36 (approx) cm.

Step-by-step explanation:

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Answer 2

Answer:

Circumference = 2 ×pi×radius

42 = 2×22/7× r

r = 42×7 / 2×22

r = 294/44

r=6.68cm

Now radius is 6.68 cm

draw the circle with radius 6.68cm