DS question - explanation is needed!!! : DS Archive
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DS question - explanation is needed!!!

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DS question - explanation is needed!!! [#permalink]

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13 Jul 2007, 04:28
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13 Jul 2007, 06:12
I am getting D.

The picture frame outside dimensions are 3ft*3ft=36in*36in. We only need w to find out what the area of the frame is. So using w=3. We can break each of those four segments in the square into two triangles and one quadrilateral. The quad's area is (36-3-3)*(3). The triangles's areas are 3*3/2. So the area of each piece is (30*3)+(3*3).

Using 2, we can find out what w equals. Since PQ=sqrt18, we know w^2+w^2=sqrt18. So 2w^2=sqrt18. This means w=3. We can then solve for each piece using the same method as above.
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13 Jul 2007, 08:01
go for D.
you can find areas by knowing sides . you can find each side by knowing the width w in first case and then hypotnuse of right angeled traingle in the second case.
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15 Jul 2007, 23:07
Thanks for the answers - could not find that right triangle had 2 equal sides
15 Jul 2007, 23:07
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