A shed is in the shape of a rectangular box with a triangular prism on top. The shed is 12 m long. The base of the rectangular box is 4 m wide and the walls are 2.5 m high. The full height, including the walls and the height of the triangular prism, is 5 m.Calculate the volume of the shed.
Question
A shed is in the shape of a rectangular box with a triangular prism on top. The shed is 12 m long. The base of the rectangular box is 4 m wide and the walls are 2.5 m high. The full height, including the walls and the height of the triangular prism, is 5 m.Calculate the volume of the shed.
Solution
To calculate the volume of the shed, we need to find the volume of both the rectangular box and the triangular prism and then add them together.
Step 1: Calculate the volume of the rectangular box The volume of a rectangular box is given by the formula length * width * height. So, the volume of the rectangular box part of the shed is 12 m * 4 m * 2.5 m = 120 cubic meters.
Step 2: Calculate the volume of the triangular prism The volume of a triangular prism is given by the formula 0.5 * base * height * length. The base of the triangular prism is the same as the width of the rectangular box, which is 4 m. The height of the triangular prism is the full height of the shed minus the height of the walls, which is 5 m - 2.5 m = 2.5 m. So, the volume of the triangular prism part of the shed is 0.5 * 4 m * 2.5 m * 12 m = 60 cubic meters.
Step 3: Add the volumes of the rectangular box and the triangular prism The total volume of the shed is 120 cubic meters + 60 cubic meters = 180 cubic meters.
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