Question

Determine x na figura, usando pitágoras

Answer 1

a2 = b2 + c2
( 3V11)2 = ( 3V2)2 + x2
(3)2.11 = (3)2.2 + x2
9.11 = 9.2 + x2
99 = 18 + x2
99 - 18 = x2
81 = x2
- x2 = - 81 . ( - 1 )
x2 = 81
x = V81
x = 9

Answer 2

(3√11)² = (3√2)² + x²
9.11 = 9.2 + x²
99 = 18 + x²
x² = 99 - 18
x² = 81
x = √81
x = 9