tolong di kawab ya kakak atau abang

22.) L = ¾×π×r×r
= ¾×3,14×10×10
=¾×314
=942/4
235,5dm²
(C)

23.) trapesium = ½×(a+b)×t
=½×(8+12)×6
=½×20×6
=10×6
=60

Se3 = ½×a×t
=½×12×15
=180/2
=90

L Trapesium + L se3 =
60+90=150cm²
(B)