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Luas = 3/4 x 22/7 x 21 x 21
= 4.158 /4 cm kuadrat
= 1039,5 cm kuadrat
No 2
Luas persegi panjang = 52cm x 15cm
= 780 cm kuadrat
Luas 1/2 lingkaran
1/2 x 22/7 x 14 x 14 = 308 cm kuadrat
Jumlah luas = 1039,5 + 780
=1819,5 cm kuadrat
No 3
Volume = luas alas x tinggi
1/2 x 14 x 15 x 27 = 2.835 cm kubik
Maaf kalo salah