Question

Need help with this work ASAP

Answer 1

option 2: 15

Explanation:

ΔBOA is a right angled triangle.

By Pythagoras theorem,

`{oa}^(2) = {bo}^(2) + {ba}^(2)`

`{oa}^(2) = { {9}^(2) } + {12}^(2)`

`{oa}^(2) = 81 + 144`

OA = √225

OA = 15