Question

Find the circumference of a circle whose radius is 42 cm and also find its diameter.​

Answer 1

Answer:

R=42

Step-by-step explanation:

circumference of circle=2πR

=2×22/7×42

=264

diameter of circle=2R =2×42= 84

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Answer 2

Explanation: (hope it helps

To find radius if diameter is given then we should know that radius is always half of diameter so if diameter is = 50 radius is half of it which is 50 / 2 which gives us 25 and to find diameter if radius is given then we should we should multiply the radius with 2 as diameter is two times of radius  radius = 25 then 25 x 2 which is 50 which is the diameter

And to find circumfrence we always find diametre after finding diametre we multiply the result with the pi (pie = 3.14) so if diametre is 50 we shall multiply it with 3.14 which gives us 157 cm as circumfrence

Main point:

We find diamtere which is 42 x 2 =  84 and to find circumfrence we multiply it with pi value which is = 263.89cm