Diketahui :
p = (x + 2) cm
l = (2x + 4) cm
t = (x + 1 )cm
Ditanyakan :
Volume = ... cm³
Penyelesaian :
V = p × l × t
= (x + 2) × (2x + 4) × (x + 1)
= [(x + 2) × (2x + 4)] × (x + 1)
=( 2x² + 4x +4x + 8) × (x + 1)
= (2x² + 8x + 8) × (x + 1)
= 2x³ + 8x² + 8x + 2x² + 8x + 8
= 2x³ + 8x² + 2x² + 8x + 8x + 8
= 2x³ + 10x² + 16x + 8
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Diketahui :
p = (x + 2) cm
l = (2x + 4) cm
t = (x + 1 )cm
Ditanyakan :
Volume = ... cm³
Penyelesaian :
V = p × l × t
= (x + 2) × (2x + 4) × (x + 1)
= [(x + 2) × (2x + 4)] × (x + 1)
=( 2x² + 4x +4x + 8) × (x + 1)
= (2x² + 8x + 8) × (x + 1)
= 2x³ + 8x² + 8x + 2x² + 8x + 8
= 2x³ + 8x² + 2x² + 8x + 8x + 8
= 2x³ + 10x² + 16x + 8