flyingbunny wrote:

yezz wrote:

Does the rectangle have an area less than 30?

(1) Perimeter = 20

(2) Diagonal < 10

for (1), perimeter = 20, therefore the Smax=(20/4)^2=25<30

A sufficient

for (2), suppose X^2+Y^2=100

the area is S=XY=X\(\sqrt{100-X^2}\)

when X^2=50 or X=\(\sqrt{50}\), Smax=50>30

So the answer is A

Dont think this is correct....

ST1 - SUFF for sure....

ST2 - gives that area is more than 30... therefore is very much sufficient to answer the question....

Hence answer should be D....

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JT...........

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