SOMEONE PLS HELP! In square QRST, points U and V are midpoints. If the square has a side length of 18 mm, what is the probability that a point chosen at random in the square lies in the shaded triangle region? Round the answer to the nearest thousandth.

A.
0.028
B.
0.056
C.
0.125
D.
0.222

Question

SOMEONE PLS HELP! In square QRST, points U and V are midpoints. If the square has a side length of 18 mm, what is the probability that a point chosen at random in the square lies in the shaded triangle region? Round the answer to the nearest thousandth.

A.
0.028
B.
0.056
C.
0.125
D.
0.222

anonymous · Answer

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anonymous · Answer

I have less then 5 minutes to do this problem. Someone pls help me out!!! :(

jack1 · Answer

find area of shaded bit 
then area of whole
then proportion of one to the other

jack1 · Answer

find area of shaded bit = 9 x 9 x 0.5
then area of whole        =  18  x 18
then proportion of one to the other   = top answer / bottom answer

anonymous · Answer

I still didnt get the right answer.. i got 8.

jack1 · Answer

...0.125

jack1 · Answer

it worked out to be 40.5 or so over 324

jack1 · Answer

ah, i think you flipped it

anonymous · Answer

yeah i got the 40.5 part.. and the 324 but it still gave me 8 for some reason. :/ i think i need a new calculator.

anonymous · Answer

i think i did. xD thanks!

jack1 · Answer

all good, glad we got it sorted ;D

anonymous · Answer

haha. me too. xD