tolong jawab pakai cara 23-24 tolong yah

23. La= 1/2 x 3,14 x 2 x 10
= 62,8cm
Lb= 20+20+35+25
= 100cm
Lgabungan= 100cm+ 62,8cm
=162,8cm

24. La= axt/2= 15x20/2= 150cm²
Lb= axt/2= 12x16/2= 96cm²
Lgab= 150cm²+96cm²
= 246cm²x2
= 492cm²
✓=500-492
=8cm