Answer:
2.57 or 2.5703939893007399
Hope this helped have a good one! :)
You have two 30-60-90 triangles, ADC and BDC.
The ratio of the lengths of the sides of a 30-60-90 triangle is
short leg : long leg : hypotenuse
1 : sqrt(3) : 2
Using triangle ADC, we can find length AC.
Using triangle BDC, we can find length BC.
Then AB = AC - BC
First, we find length AC.
Look at triangle ACD.
DC is the short leg opposite the 30-deg angle.
DC = 10sqrt(3)
AC = sqrt(3) * 10sqrt(3) = 3 * 10 = 30
Now, we find length BC.
Look at triangle BCD.
For triangle BCD, the long leg is DC and the short leg is BC.
BC = 10sqrt(3)/sqrt(3) = 10
AB = AC - BC = 30 - 10 = 20
Answer:







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hope it helps...
have a great day!!
HEY THERE.
THE CORRECT ANSWER IS 36/63 = 4/7
Hope this helps you
7/ (3*7)=
(7:7)/ (7*3): 7:)
(7:7):(21:7=
answer 1/3 or do you want full explanation of each step?