hi tolong donk di jwb buat di kumpulin bsk pleasee

L= Lpersegi - (Lsegitiga+L1/2lingkaran)
L = sxs - ((1/2xaxt)+(1/2πr²))
L = 20x20 - ((1/2x20x8) + (1/2x3,14x10²))
L = 400 - (80+(1/2x314)
L = 400 - (80+157)
L = 400 - 237
L = 163cm²