1. **State the problem:**
We have a rectangular prism with dimensions length $7$ cm, width $4$ cm, and height $4$ cm. A triangular pyramid (a tetrahedron) with vertical height $2$ cm is removed from the top front left corner. We need to find the volume of the remaining solid.
2. **Formula for volume of rectangular prism:**
$$V_{prism} = \text{length} \times \text{width} \times \text{height}$$
3. **Calculate volume of the prism:**
$$V_{prism} = 7 \times 4 \times 4 = 112 \text{ cm}^3$$
4. **Volume of the removed triangular pyramid:**
The removed pyramid is a right triangular pyramid with base area and height given. The base is a right triangle with legs $4$ cm and $4$ cm (width and length of the removed corner), and the height of the pyramid is $2$ cm.
5. **Calculate base area of the triangular pyramid:**
$$A_{base} = \frac{1}{2} \times 4 \times 4 = 8 \text{ cm}^2$$
6. **Formula for volume of a pyramid:**
$$V_{pyramid} = \frac{1}{3} \times A_{base} \times \text{height}$$
7. **Calculate volume of the pyramid:**
$$V_{pyramid} = \frac{1}{3} \times 8 \times 2 = \frac{16}{3} \approx 5.33 \text{ cm}^3$$
8. **Calculate volume of the remaining solid:**
$$V_{remaining} = V_{prism} - V_{pyramid} = 112 - \frac{16}{3} = \frac{336}{3} - \frac{16}{3} = \frac{320}{3} \approx 106.67 \text{ cm}^3$$
**Final answer:**
The volume of the remaining solid is $$\boxed{\frac{320}{3} \text{ cm}^3 \approx 106.67 \text{ cm}^3}$$.
Prism Pyramid Volume 88D0Fc
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