Luas permukaan bangun ruang gabungan balok dan kubus dengan panjang 20 lebar 8 tinggi 10 dan rusuk kubus 10 adalah

First we have to subtract 72 from 604. But we can do it into two steps. Then it makes much easier. 604-72=600+4-70-2=600 +2-70=530+2=532
And now we want to obtain 604 again. But before we calculate it, think what we already did. We subtract 72 from 604 and our result was 532. Now we want back to 604 again, so we have to add 72 to 532. In few steps to do it easier. 532+72= 530 + 2+ 70 + 2= 600 + 4=604

Answered by macio06 | 2024-06-10

the answer is 72 because 604-72=532 and 532+72=604

Answered by tpookie276 | 2024-06-10

To determine the missing numbers, we subtract 72 from 604 to find that it equals 532. Then, by adding 532 and the missing number (72), we confirm that it equals 604. Both steps validate our solution and confirm the correctness of the calculations.
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Answered by macio06 | 2024-12-26

Untuk menghitung luas permukaannya, kita harus mengetahui rumus luas permukaan balok dan kubus terlebih dahulu. Rumusnya yaitu :Rumus luas permukaan balok :L = 2 × (pl + pt + lt)Di mana :L = luas permukaan balokp = panjang balokl = lebar balokt = tinggi balokRumus luas permukaan kubus : L = 6 × s × sDi mana :L = luas permukaan kubuss = sisi atau panjang rusuk kubusPembahasanDiketahui :p balok = 20l balok = 8t balok = 10s kubus = 10Ditanya : luas permukaan gabungan balok dan kubusJawab :L balok = 2 × (pl + pt + lt)L balok = 2 × ((20 × 8) + (20 × 10) + (8 × 10))L balok = 2 × (160 + 200 + 80)L balok = 2 × 440L balok = 880L kubus = 6 × s × sL kubus = 6 × 10 × 10L kubus = 600L gabungan = L balok + L kubusL gabungan = 880 + 600L gabungan = 1480KesimpulanJadi, luas permukaan gabungan balok dan kubus adalah 1480

Answered by vinzzr | 2025-07-10