Question

Can someone please help me with this, it’s urgent!!

Answer 1

Answer:

$\sqrt{ {a}^{2} + {b}^{2} } \: \: units$

Step-by-step explanation:

Using distance formula

$\sqrt{ {(0 - b}^{2} + {(b - 0)}^{2} } \\ = \sqrt{ {a}^{2} + {b}^{2} }$