Answer:To calculate the volume of a triangular prism, measure the width and height of a triangular base, then multiply the base by the height by 1/2 to determine the triangle's area. Next, measure the height of the triangular prism and multiply this by the triangle's area to get the volume.
121 rounded to the nearest 100 is 100 because 121 is closer to 100 than 200. 252 rounded to the nearest hundred is 300 because 252 is closer to 300 than 100.
