Rectangle: 24 * 43 = 1032 (m^2)
Triangle: ( 61 - 43 ) * 24 = 432 ( m^2 ) 432/2 = 216 ( m^2 )
Semicircle: (24/2)^2 * 3.14 = 452.16 ( m^2 ) 452.16/2 = 226.08 ( m^2 )
The whole: 1032 + 216 + 226.08 = 1474.08 ( m^2 )
Btw, the 3.14 refers to Pi for calculating the semicircle.