Question

20) the areas of two similar triangles ABC and PQR are in the ratio of 9 :16. If BC is equal to 4.5 CM then the length of QR is___ *
1 point
A)6cm
B)3cm
C)4cm
D)9cm​

Answer 1

Step-by-step explanation:

BC^2/QR^2=area(∆ABC)/area(∆PQR)

BC/QR=√(9/16)=3/4

4.5/QR=3/4

QR=4.5*4/3=18/3=6

QR=6