Question

Can someone help me i have no idea how to do this

Answer 1

Explanation:

P=2+7sqrt2+6-2sqrt2+4+5sqrt2=2+6+4+sqrt2(7-2+5)=12+10sqrt2=2(6+5sqrt2)

Answer 2

Explanation:

You have a right triangle,

, so basically, you add all the sides

2+7
`√(2)`+6-2
`√(2)`+4+5
`√(2)`= 12+10
`√(2)`