Looks to be C ,
the first statement only gives the ratio...
therefore diametre can be 3, 6, 9 ..etc not sufficient
second statement says the hypotunese is 25
therefore , we can have any pythogoras triplet
with x^2+ y^2 = 25 ^ as the answer
infact we can have 15 , 20 as one of the values ....
but in this case also diametre can be 20 or 15 ,
if we combine the two statements we know diametre will be 15
hence C
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Source: Beat The GMAT — Data Sufficiency |
Your explanation makes perfect sense. OA - C.
However, isnt BDC a 45-45-90 triangle? Anyhow, I picked D since you only need one of the sides of the triangle to determine BC -- I was wrong.
Could one of you please explain why BDC is NOT a 45-45-90 triangle. Thanks!
However, isnt BDC a 45-45-90 triangle? Anyhow, I picked D since you only need one of the sides of the triangle to determine BC -- I was wrong.
Could one of you please explain why BDC is NOT a 45-45-90 triangle. Thanks!
BDC cant be 45-45-90 triangle
as the sides are required in 1:1:rt2 ratio
or BC and CD has to be equal, but we know that BC and CD are not equal
they are in ratio 3:4
as the sides are required in 1:1:rt2 ratio
or BC and CD has to be equal, but we know that BC and CD are not equal
they are in ratio 3:4
