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EF = (DC x AE + AB x ED)/(AE + ED)
10 = (6 x 3 + AB x 2)/(3 + 2)
50 = 18 + 2AB
32 = 2AB
AB = 16 cm
nomor 29: ada 3 sisi
nomor 32:
V = V tabung + V kerucut
= π x 3 x 3 x 12 + 1/3 x π x 3 x 3 x 4
= 108π + 12π
= 120π (gda di option)
nomor 37:
Banyak siswa April = 35/100 x 40 = 14