Question

Triangle UVW is the pre-image of triangle RST with a scale factor of 3. Find the area of triangle UVW if the area of triangle RST is 9 cm2.

(Points : 1)
81 cm2

27 cm2

18 cm2

9 cm2

Find the area of the pre-image rectangle QRST if the area of the image rectangle DEFG is 54 cm2 and the scale factor is .

(Points : 1)
216 cm2

108 cm2

54 cm2

24 cm2


Find WZ if the area of trapezoid ABCD is 225 cm2, the area of trapezoid WXYZ is 81 cm2, and AD is 35 cm.

(Points : 1)
21 cm

12.6 cm