求下面阴影部分的面积。（单位：m）*g5n(M0{,x:i4m7I9x1O1|3n
*g5n(M0{,x:i4m7I9x1O1|3n
算式：提示0k+k5P6[:I2J*~*g5n(M0{,x:i4m7I9x1O1|3n
答：阴影部分的面积是'E;c1Z2`2f-m0f(z(]5{平方米。*g5n(M0{,x:i4m7I9x1O1|3n
算式：提示+G4](u1r*g5n(M0{,x:i4m7I9x1O1|3n
答：阴影部分的面积是+t,N3H)c;\2P/C3x平方米。*g5n(M0{,x:i4m7I9x1O1|3n