5. The Total Surface Area of a cube is 864cm. Find its length6. A tank

1.	5. The Total Surface Area of a cube is 864cm. Find its length6. A tank which is cuboidal in shape, has volume 6.4m, length and breadth of thebase are 2m and 1.6m respectively. Find the depth of the tank.
Answer» Step-by-step explanation: 5.For CUBE: TOTAL SURFACE AREA of cube=864 sq.cm $total \: surface \: area \: of \: cube = 6 {l }^{2} \\ 864 = 6 {l}^{2} \\ {l}^{2} = \frac{864}{6} \\ {l }^{2} = 144 \\ l =12cm$

5. The Total Surface Area of a cube is 864cm. Find its length6. A tank which is cuboidal in shape, has volume 6.4m, length and breadth of thebase are 2m and 1.6m respectively. Find the depth of the tank.

Answer»

Step-by-step explanation:

5.For CUBE:

TOTAL SURFACE AREA of cube=864 sq.cm

$total \: surface \: area \: of \: cube = 6 {l }^{2} \\ 864 = 6 {l}^{2} \\ {l}^{2} = \frac{864}{6} \\ {l }^{2} = 144 \\ l =12cm$

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5. The Total Surface Area of a cube is 864cm. Find its length6. A tank which is cuboidal in shape, has volume 6.4m, length and breadth of thebase are 2m and 1.6m respectively. Find the depth of the tank.​

5.For CUBE:

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5. The Total Surface Area of a cube is 864cm. Find its length6. A tank which is cuboidal in shape, has volume 6.4m, length and breadth of thebase are 2m and 1.6m respectively. Find the depth of the tank.