Question

Given that the diameter of a circle is 5 mm, find the radius of the circle.

Answer 1

`\huge\underline{ \sf \: Formulae \: to \: remember \: for \: solving \: the \: question:}`

`\\{ \sf radius \: of \: a \: circle = (d)/(2) where \: d \: is \: the \: diameter \: of \: the \: circle}`

`\huge\underline{\sf Given:}`

`\ \: { \sf The \: diameter \: of \: a \: circle \: is \: 5 mm.}`

`\huge\underline{\sf To \: find \: out:}`

`\ { \sf Radius \: of \: the \: circle}`

`\huge\underline{\sf Solution:}`

`\\{ \sf The \: diameter \: of \: the \: circle \: is \: 5 \: mm.}`

`\\{ \sf Therefore \: radius \: of \: the \: circle}`

`\\{ \sf = (5)/(2) \: mm}`

`\\{ \sf = 2.5 \: mm}`

`\huge\underline{\sf Answer:}`

`\\{\sf The \: radius \: of \: the \: circle \: is \: 2.5 \: mm.}`

Answer 2

r=2.5mm

Explanation:

Using the formula