Answer:
2800 cubic feet
Explanation:
Height of the rectangular prism = 20 feet
Width of the rectangular prism = 7 feet
Length of the rectangular prism = 20 feet
Hence the volume of the rectangular prism is given by
![\[length * width * height\]](https://img.qammunity.org/2021/formulas/mathematics/middle-school/brv22w2uxc6frmdg33q6kdg1p5m7ofaol4.png)
=
![\[20 * 7 * 20\]](https://img.qammunity.org/2021/formulas/mathematics/middle-school/hl2xbqkx8y4qhps77hybvqtzfrqpgzfjvq.png)
=
![\[140 * 20\]](https://img.qammunity.org/2021/formulas/mathematics/middle-school/fhaab8rnx2zfj3lbfieyq0b125urehsvxh.png)
=
![\[2800\]](https://img.qammunity.org/2021/formulas/mathematics/middle-school/ctljl1guh1v1723k0zmy87wkmzjkdzeuz1.png)
Volume of the given prism is 2800 cubic feet.