Question

Find the circumfrence.....

Answer 1

Answer: 65.94

Explanation:

Using first 3 numbers 3.14

Answer 2

`\\\sf\\\textsf{Solution:}\\\textsf{Here we are given diameter(d) = 21cm}\\\textsf{So the radius of the circle will be half of diameter i.e. }(21)/(2)cm.\\\textsf{Now,}\\\textsf{Circumference = }2\pi r = 2\pi ((21)/(2))=21\pi cm`