4. Find volume of right rectangular prism with area of base of 10 in^2 and height of 4 inches. Proper units

5. Find volume of rectangular pyramid with length of 30cm, width of 20 cm and altitude of 40cm. Proper units

4. The area of the base of the right rectangular prism is given as 10 in^2, and the height is given as 4 inches. To find the volume, we multiply the area of the base by the height.

Volume = Area of base x height
Volume = 10 in^2 x 4 inches

Therefore, the volume of the right rectangular prism is 40 in^3.

5. The length of the rectangular pyramid is given as 30 cm, the width is given as 20 cm, and the altitude (height) is given as 40 cm. To find the volume of the pyramid, we use the formula:

Volume = (1/3) x base area x height

The base area is the area of the rectangle formed by the length and width. Therefore, the base area is 30 cm x 20 cm = 600 cm^2.

Volume = (1/3) x 600 cm^2 x 40 cm

Therefore, the volume of the rectangular pyramid is 8,000 cm^3.