Question

Please read the question ​

Answer 1

Apply Thales theorem

• 7/2=x/3.5
• 3.5=x/3.5
• x=3.5²
• x=12.25

Answer 2

`(2)/(7)= (3.5)/(x) => 2x=3.5(7)= 24.5 => x=(24.5)/(2) = 12.25`

ok done. Thank to me :>