The figure below shows a rectangle WXYZ divided into 4 parts: A, B, C, D. The ratio of the area of A to that of area B is 1:3 and the ratio of the area B to that of C is 2:3. If WZ is 6 cm and area of D is 30 cm^2, what is the area of rectangle WXYZ?
Originally posted by -Wanderer-:I can’t upload the diagram unless it is uploaded onto a URL. Anyone can help me with that? Thanks!
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A : B = 1 : 3 = 2 : 6
B : C = 2 : 3 = 6 : 9
D = C / B x A = 9 / 6 x 2 = 3
A + B + C + D = 2 + 6 + 9 + 3 = 20
3 u -> 30
20 u -> 20 / 3 x 30 = 200 cm2
The area of rectangle WXYZ is 200 cm2