PENYELESAIAN
P = .....?
L = 3 cm
T = 11 cm
Luas permukaan balok = 206 cm²
tentukanlah panjang dari balok tersebut
Lp = 2(p × L + p × t + L × t)
206 = 2(p × 3 + p × 11 + 3 × 11)
206/2 = p × 3 + p × 11 + 3 × 11
103 = 3p + 11p + 33
103 = 14p + 33
14p = 103 - 33
14p = 70
p = 70/14
p = 5 cm
Jawaban:
10 cm
Penjelasan dengan langkah-langkah:
Lp = 2 x ( pl + pt + lt )
206 = 2 x ( p x 3 + p x 11 + 3 x 11 )
206 = 2 x ( 3p + 11p + 33 )
206 = 2 x ( 14 p + 33 )
206 = 14 p + 66
206 - 66 = 14 p
14p = 140
p = 140 : 14
p = 10 cm
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PENYELESAIAN
Diketahui
P = .....?
L = 3 cm
T = 11 cm
Luas permukaan balok = 206 cm²
Ditanya
tentukanlah panjang dari balok tersebut
Dijawab
Lp = 2(p × L + p × t + L × t)
206 = 2(p × 3 + p × 11 + 3 × 11)
206/2 = p × 3 + p × 11 + 3 × 11
103 = 3p + 11p + 33
103 = 14p + 33
14p = 103 - 33
14p = 70
p = 70/14
p = 5 cm
Jawaban:
10 cm
Penjelasan dengan langkah-langkah:
Lp = 2 x ( pl + pt + lt )
206 = 2 x ( p x 3 + p x 11 + 3 x 11 )
206 = 2 x ( 3p + 11p + 33 )
206 = 2 x ( 14 p + 33 )
206 = 14 p + 66
206 - 66 = 14 p
14p = 140
p = 140 : 14
p = 10 cm