To find the density of the toy, we need to use the formula for density, which is:
\[ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \]
We know:
- Mass of the toy = 25 grams
Next, we need to calculate the volume of the rectangular pyramid. The formula for the volume \( V \) of a rectangular pyramid is:
\[ V = \frac{1}{3} \times \text{Base Area} \times \text{Height} \]
- Calculate the Base Area of the rectangular base:
\[ \text{Base Area} = \text{Length} \times \text{Width} = 4 , \text{cm} \times 5 , \text{cm} = 20 , \text{cm}^2 \]
- Calculate the Volume using the Base Area and the Height:
\[ V = \frac{1}{3} \times 20 , \text{cm}^2 \times 6 , \text{cm} = \frac{1}{3} \times 120 , \text{cm}^3 = 40 , \text{cm}^3 \]
- Now calculate the Density:
\[ \text{Density} = \frac{25 , \text{grams}}{40 , \text{cm}^3} = 0.625 , \text{grams/cm}^3 \]
Thus, the density of the toy is
\[ \boxed{0.625 , \text{grams/cm}^3} \]