jawaban no 21:c
jawaban no 22:b
penjelasan
no 21
Lpersegi panjang+Lsegitiga siku²
(p×l)+(1/2×a×t)
(20×12)+(1/2×5×12)
240+30=270
no 22
1/4×2×phi×jari-jari
1/4×2×(22/7×28)
4×22=88
maaf kalau salah
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jawaban no 21:c
jawaban no 22:b
penjelasan
no 21
Lpersegi panjang+Lsegitiga siku²
(p×l)+(1/2×a×t)
(20×12)+(1/2×5×12)
240+30=270
no 22
1/4×2×phi×jari-jari
1/4×2×(22/7×28)
4×22=88
maaf kalau salah