Question

How do you find the arc length of the partial circle?

Answer 1

• Angle=2π-π/2=3π/2
• Radius=4

So

Arc length

• L=r
  `\theta`
• L=4(3π/2)
• L=2(3π)
• L=6π
• L=18.8units

Answer 2

`\qquad\qquad\huge\underline{{\sf Answer}}♨`

As we know :

Length of arc = Radius × Angle made by Arc at center [ in radians ]

`\qquad \tt \dashrightarrow \: arc = radius * angle \: \: ( in \: \: rad)`

`\qquad \tt \dashrightarrow \: arc = 4 * (3 \pi)/(2)`

`\qquad \tt \dashrightarrow \: arc = 6\pi \frac{ }{} \: \: units`

or

`\qquad \tt \dashrightarrow \: arc = 6* 3.14 = 18.84 \: \: units\frac{ }{} \: \:`