Question

Find the radius and diameter of a circular puddle whose

circumference is 220 cm . ( Take ∏ = 22/7)​

Answer 1

`r = 35cm`

Explanation:

Given

`C = 220cm`

`\pi = (22)/(7)`

Required

Determine the radius

Circumference (C) is calculated as:

`C = 2\pi r`

Where r represents radius

Substitute values for C and
`\pi`

`220cm = 2 * (22)/(7) * r`

`220cm = (44)/(7) * r`

Multiply through by 7/44

`(7)/(44) * 220cm = (7)/(44) * (44)/(7) * r`

`r = (7)/(44) * 220cm =`

`r = (7 * 220cm )/(44) =`

`r = (1540\ cm)/(44)`

`r = 35cm`

Hence, the radius is 35cm