Question

the lengths of the unknown sides.​

Answer 1

Answer:

∆ ABC =~ ∆ PQR

Step-by-step explanation:

Here,

AB = DC and BC = AD

Angle A = Angle P ....( both of 90° )

hence,

∆ ABC =~ ∆ PQR ...... ( by SAS test)

Side BC = 4.5 cm

and

Side PR = 2.1.

Hope it helps