Jawab:Lebar balok = 18 cm
Penjelasan:Diketahui balokPanjang (P) = 20 cmTinggi (T) = 10 cmLuas (Lp) = 1480 cm²
Ditanya, lebar (L)Lp = 2×((L×(P+T)) + (P×T))1480 = 2×((L×(20+10)) + (20×10))1480 = 2×((L×30) + 200)(L×30) + 200 = 1480 ÷ 2(L×30) + 200 = 740L×30 = 740 - 200L×30 = 540L = 540 ÷ 30L = 18
Lebar balok = 18 cm(xcvi)
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Jawab:
Lebar balok = 18 cm
Penjelasan:
Diketahui balok
Panjang (P) = 20 cm
Tinggi (T) = 10 cm
Luas (Lp) = 1480 cm²
Ditanya, lebar (L)
Lp = 2×((L×(P+T)) + (P×T))
1480 = 2×((L×(20+10)) + (20×10))
1480 = 2×((L×30) + 200)
(L×30) + 200 = 1480 ÷ 2
(L×30) + 200 = 740
L×30 = 740 - 200
L×30 = 540
L = 540 ÷ 30
L = 18
Lebar balok = 18 cm
(xcvi)