The smaller triangle is dilated by scale factor of 1.4

so x will be :

and y will be:

good luck
If it is a ratio of 1:2:3 then it has to be a 30 60 90 triangle in order for it to be a right triangle
Since the string has already two 2, then we will compute the whole number of strings whose length is 4, over the alphabet {0,1}:

There is then 16 such strings.
Since this is a right triangle, you can use the main trig functions sin, cos, and tan. We must use sin for this problem because sin= opp/hyp. Plug in the numbers to this function. Sin (53) = a/25. Thus when you cross multiply, you get a= sin (53) x 25. When you plug it into a calculator the answer should come out to 19.97
I hope this helps you
small circle area=3,14.19^2=1133,5
large circle area =3,14.24^2=1808,6
shaded area=1808,6-1133,5
shaded area=675,1