Question

Pls help me find the circumference of a circle with radius of 28ft. let π=22/7

Answer 1

Circumference formula is 2 pi r
So it’s 2 x 22/7 x 28 which equals 176ft

Answer 2

See below ~

Here , it is given that the radius of a circle is 28 ft and we've to find it's circumference .

So,

Formula :

`\sf \: C = 2πr \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [ \red{ π = (22)/(7)} ]`

Now ,

`\Longrightarrow \sf {C = 2*π*r }`

`\: \: \: \: \: \: \: \: \: \: \: \:`

`\Longrightarrow \sf{C = 2* (22)/( \cancel7) * \cancel{28}}`

`\: \: \: \: \: \: \: \: \: \: \: \:`

`\Longrightarrow \sf{C = 2* 22 * 4}`

`\: \: \: \: \: \: \: \: \: \: \: \:`

`\Longrightarrow \sf{C = 44 * 4}`

`\: \: \: \: \: \: \: \: \: \: \: \:`

`\Longrightarrow \sf{C = 176}`

Therefore , the circumference of circle is 176 ft .