2 Attachment(s)

Ratio of areas of similar figures

Hi all,

Here goes the question:

Attachment 20516

In the diagram, AC,RQ and BP are parallel lines. AR=9cm,RQ=6cm,BP=8cm, and RB=3cm. Calculate the ratio of:

(i)area of triangle ARQ:area of trapezium RBPQ'

(ii)area of triangle BQR:area of triangle ARQ

(iii)area of triangle ABC:area of triangle BQR

Another question:

Attachment 20517

In the diagram, AB=5cm,BE=4cm,EC=2cm,CD=3cm and DA=1cm. If DE=*x*cm, using a geometrical argument, deduce the value of x.

Thanks in advance(Happy)