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26. B. 706.5 cm
25 . luas segitiga 1 = 1/2*alas*tinggi = 1/2*14*18 = 126 cm^
luas segitiga 2 =1/2*alas*tinggi = 1/2 * 14*12=84 cm^
luas gabungan = luas 1 + luas 2 = 126 + 84 = 210 cm^
26. luas 1/4 lingkaran = 1/4 * π *r^ = 1/4 *3,14 *30 *30 =706,5 cm
27. tinggi balok = v / ( p*l ) = 1584 / (16*11 ) = 1584 / 176 = 9 cm
28. volume prisma segitiga = (1/2 *alas segitiga*tinggi segitiga ) * tinggi prisma
=(1/2*20*15 ) * 20 =150 * 20 =3000 cm
*catatan :
1. ^ : pangkat 2
2. * : kali
3. semoga yang nomer 27 aku gak salah liat lebarnya
4. semoga gak salah