The areas of two similar triangles ABC and PQR are in the ratio 9 : 16. If BC = 4.5 cm, find the length of QR.
We have,
ABC
PQR
Area(
) =BC2
Area (
) QR2
(4.5)2/QR2=9/16
4.5/QR=3/4
QR=4x4.5/3
QR=6cm
18
The areas of two similar triangles ABC and PQR are in the ratio 9 : 16. If BC = 4.5 cm, find the length of QR.
We have,
ABCPQR
Area() =BC2
Area () QR2
(4.5)2/QR2=9/16
4.5/QR=3/4
QR=4x4.5/3
QR=6cm