To get the value of x you need to use the Pythagorean Theorem
a²+b²=c² → 3²+b²=6.708204² (√45) 9 +b² =45.000001 -9 ↓ ↓-9 --------------------------- zero pair √b² = √36.000001 b = 6 One side of the isosceles the x is 6, but we need the whole part so for last you just multiply 6×2= 12 The answer is...... X=12
