find the volume of the cube, whose side is y+3cm
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Answer:
(y³ + 9 + 9y² + 27y) cm³
Step-by-step explanation:
We know,
Volume of a cube = a³
Here a = y+3
Hence the volume of a cube with side y + 3 cm
=(y + 3)³
=(a + b)³ = a³ + b³ + 3ab(a + b)
=y³ + 3³ + 3[y][3](y + 3)
=y³ + 9 + 9y(y + 3)
=(y³ + 9 + 9y² + 27y) cm³
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