Question

There’s no actual question just this picture & multiple choices , please help .

Answer 1

12

Explanation:

There is a right angle formed, hence this triangle is a right-angled triangle.

Using Pythagoras Theorem,

`a^2+b^2=c^2`

`16^2+b^2=20^2`

`256+b^2=400`

`b^2=400-256=144`

`b=12`

The missing length is 12