The problem states that an object has a volume of $65 m^3$ and a density of $26 \frac{kg}{m^3}$. We need to find the mass of this object.

1. Problem Description

The problem states that an object has a volume of $65 m^3$ and a density of $26 \frac{kg}{m^3}$. We need to find the mass of this object.

2. Solution Steps

The formula relating density, mass, and volume is:

$Density = \frac{Mass}{Volume}$

We are given the density and the volume, so we can solve for the mass:

$Mass = Density \times Volume$

$Mass = 26 \frac{kg}{m^3} \times 65 m^3$

$Mass = 26 \times 65 kg$

$Mass = 1690 kg$

3. Final Answer

1690 kg