A prism whose side edge is perpendicular to the bottom is called a straight prism. It is known that the bottom is a rhombic straight prism. Its volume diagonals are 9 and 15 respectively, and its height is 5

As shown in the figure, in abcd-a'b'c'd ', the two diagonals are a'c = 15cm, BD' = 9cm, and the side edges are AA '= DD' = 5cm. Both ∵ BDD 'and ∵ ACA' are right triangles. According to Pythagorean theorem, ac2 = 152-52 = 200, BD2 = 92-52 = 56, AC = 200 = 102, BD = 56 = 214 ∵

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1. A prism whose side edge is perpendicular to the bottom is called a straight prism. It is known that the bottom is a rhombic straight prism. Its volume diagonals are 9 and 15 respectively, and its height is 5
2. The bottom surface of straight quadrangular prism ABCD --- a1b1c1d1 with height of 1 is a diamond with area of 2 The area sum of BDD 1B1 is 5, and the bottom edge length of the straight quadrangular prism is calculated
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