Tentukan nilai x pada gambar berikut ini!

PT = x
PR = PT + TR = x + 2cm
PS = 6 cm
PQ = PS + SQ = 6cm + 4cm = 10 cm

PS / PQ =PT / TR
6cm / 10cm = x / x + 2cm
6 ( x + 2 ) = 10 x
6x +12 = 10x
6x - 10x = -12
-4x = -12
x = -12 / -4
x = 3