well. i couldnt do the circular measure part. found it difficult. as for area i dnt remember the ans.
the a and b i found but dnt remember if i ever showd the real roots or wat.
wat country are u from?
I am from Brunei, i got 2.25 for the area, and a is 1 b is 2..? my friend told me that the question ask to show that a and b are real roots of curve, which you need to substitute both equation to get the equation they provided which is x^6 something something.. i missed out that part although i did it in my mind.. the circular measure part, i got it, but i am not sure if its correct, i got 7.5 for the area of shaded region though..