Question

triangle ABC similar to triangle pqr area of triangle ABC and pqr 64 CM square and hundred CM square respectively if BC is equal to 4 cm then find QR​

Answer 1

I hope this will help.,

Answer 2

QR = 5 cm  if  ΔABC ≈ Δ PQR  Area of Δ PQR = 100 cm² Area of ΔABC = 64 cm² & BC = 4 cm

Step-by-step explanation:

ΔABC ≈ Δ PQR

Area of Δ PQR  / Area of ΔABC  =  (PQ/AB)²  = (QR/BC)²  = (PR/AC)²

Area of Δ PQR = 100 cm²

Area of Δ ABC = 64 cm²

BC = 4 cm

QR = ?

Area of Δ PQR  / Area of ΔABC  =   (QR/BC)²

=> 100 /64  =  (QR/4)²

=>  25 / 16  = QR²/16

=> QR² = 25

=> QR = 5 cm

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