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x.x = 900 - 576
x.x = 324
x =18
(35.30) + (35.24) + (35.18) = 35.72 = 2520 CM
10.(12.12) + (16.16) = X.X
400 = X.X
20 =X
(30.12)+(30.16)+(30.20) = 30 . 48 = 1440 CM
11. no ini soalnya kepotong jadi tidak tahu apa jawabanya
Update No 11
soal berhubungan sama seperti nomer 10, jadi tinggi nya 30
= (1/2 × 24 ×30 ) × 35
=360×35
=12.600 cm2
2. L= L.a × t= (1/2 × a × t) ×t.prisma
= ( 1/2 × 16 × 12 ) × 30
= 96 × 30
=2,880 cm2
3. t= L.prisma : L.alas
=4.280 : ( a × t)
=4.280 : (40 × 20)
=4.280 : 800
=5.35 cm
Maaf klo salah yaa.) Smoga bermanfaat