[填空题]
Consider the followinge/;l *hftkm a4t ic,y13hu6yjy9jo9 ; amyfw/g* ja3:okf3ky w w7gb) diagram.
The sides [A B] and [B C] of the isosceles triangle A B C have lengths 5 $\mathrm{~cm}$ and the third side [A C] has length 6 $\mathrm{~cm}$ . The midpoint of [A C] is denoted by $\mathrm{M}$ . The circular arc $\mathrm{AC}$ has centre, G , the midpoint of [BM].
1. 1. Find A G .
2. Find MGA in radians.≈
2. Find the area of the shaded region.≈
