Question

Find the length of arc AB. Use 3.14 for T,

Round to the nearest tenth.
20
1 ? ]cm
Please help

Answer 1

Explanation:

answer is 12.4cm !

Answer 2

12.4 cm

Explanation:

Length of an arc AB =
`(\theta)/(360) * 2 \pi r`

Where,

`\theta = 90`

`\pi = 90`

r = 7.9 cm

Plug in the values

Length of an arc AB =
`(90)/(360) * 2 * 3.14 * 7.9`

`= (90 * 2 * 3.14 * 7.9)/(360)`

Length of an arc AB = 12.4 cm (nearest tenth)