Question

calculate the volume of a wooden object of mass 280 kg ,if density of wooden object is 800 kg/m​

Answer 1

Explanation:

density = mass /volume

volume = mass / density

• 280/800
• 0.35

Answer 2

QUESTION-:

calculate the volume of a wooden object of mass 280 kg ,if density of wooden object is 800 kg/m​

EXPLANATION-:

• Density, D = 800 kg/m
• Mass, M = 280 kg
• Volume, V = ??         [To be calculated]

Now we know that-:

$\longrightarrow \underline{\boxed{\bigstar \tt D=\frac{M}{V}}}$

Substituting the values ,we have-:

$\bf\; \rightarrow 800=\frac{280}{V}\\\\\bf\; \rightarrow V=\frac{280}{800}\\\\\bf\; \rightarrow V=\frac{28}{80}\\\\\bf\; \rightarrow \bf\; V=\frac{7}{20}\\\\\bf\; \dashrightarrow \underline{\boxed{\bf\; V=0.35\;m^3}}$

∴The volume of the box is 0.35 m³

EXTRA INFORMATION-:

Density-:

Sign⇒ D, ρ(RHO)

Definition⇒ It is the mass per unit volume

[NOTE ⇒Density depends upon temperature]

Unit⇒ SI unit → kg/m³

          CGS unit→gm/cm³

1 gm/cm³=1000 kg/m³