Question

find the wight of a cube of ms of 14cm side with density being 7.8 gm/cc

Answer 1

Given: 
Side of cube( a) = 14 cm
Density of cube (D) = 7.8 gms / cc
Volume of cube = (side)³
Volume of cube(V) = 14³ = 14 × 14 ×14= 2744 cm³
Density(D) = Mass(M) / volume(V)
D = M/V
Mass(M) = Density(D) × Volume(V)
M = 7.8 × 2744
M = 21403.2 gm
Hence , the weight of cube is 21403.2 gm

HOPE THIS HELPS :)

Answer 2

Hi friend
--------------
Your answer
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measure of one side of the cube = 14 cm

so
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volume = side × side × side

=> (14×14×14) cm³

=> 2744 cm³

density = 7.8 gm/cc

So ,
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Weight = (2744 × 7.8) gm = 21403.2 gm

HOPE IT HELPS

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