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hammer [34]
3 years ago
9

In the diagram above, rectangles DEFG and WXYZ are similar. The ratio of the area of DEFG to WYXZ is 1:4. A student's work to fi

nd ZY is shown below. Describe and correct the error in finding ZY.

Mathematics
2 answers:
zalisa [80]3 years ago
8 0
Was the 12 of GF given??
The area ratio should be 1:4, so if l×w = area (a) of DEFG, then L×W = Area (A) of WXYZ.
Since 4:1 is 4×1, A = 4×a or 4a
Since GF is length (l) and is 12, we can say that 12w = a
12×4 = 48 for length of ZY (L), and WX is also 48, and to find W would be: 48W = A
48W = 4a, since A=4a
Not sure what else you want by the limited information given!
Firlakuza [10]3 years ago
3 0

The right answer is

The ratio of the corresponding sides is not 1:4; the ratio is 1:2. Therefore, you should multiply 2 times 12 to get the correct answer of ZY = 24.

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