Question

can anyone explain how we got this step

if you know please answer​

Answer 1

Answer:

as shown in answer

putting value of π = 22/7

You have to cross multiply

22 will get divided by 22 on the other side

leaving 2 and 7

As 7 is in divide position it will become in multiple position when goes on other side of equal

and 2 is in multiply position it will become in divide position as goes on other side of equal sign.

You must have heard how sign changes when they go from one side to another of equal

+ changes into -

- changes into +

× changes into ÷

÷ changes into ×

Plz mark as brainlist if it helps you

Answer 2

Answer:

$see \\ 2 \times \frac{22}{7} \times r = 22 \\ then \: r = 22 \times \frac{7}{22 \times 2} \\ 22 \: and \: 22 \: get \: cancel \: \\ and \: now \: we \: have \: \\ r = \frac{7}{2} \\ \\ i \: dont \: no \: it \: will \: help \: you \: or \: not \: but \: i \: tried \: \\ my \: best \: \\ thank \: you$