Question

how many cubes of edge 4cm each can be cut out from cuboid whose length, breadth and height are 20cm, 18cm and 16cm resp




ectively

Answer 1

Answer:

CUBES EDGE-4cm

perimetre-4xsides = 4x4=16

volume=20x18x16=5760

divide=16/5760=0.00277777779

Answer 2

AREA OF CUBE

$area \: of \: cube = x \times x \times x \\ (x = 4) \\ area = 4 \times 4 \times 4 = 64cm ^{2}$

$area \: of \: cuboid = lbh \\ (l = 20)(b = 18)(h = 16) \\ = > 20 \times 18 \times 16 = 5760cm {}^{2}$

no of cubes in cuboid is 5760/64

so ther are 90 cubes in the cuboid