The Pyraminx is a Rubik's cube-type toy in the shape of a tetrahedron. The Pyraminx shown below has edges 15/,/text{cm}15cm long and vertical height h=12.2/,/text{cm}h=12.2cm. The triangle drawn with dashed lines is a right triangle. What is the distance rr? Round your answer to the nearest tenth.

Question

Mathematics

Demarcus Dudley

25 July, 04:49

The Pyraminx is a Rubik's cube-type toy in the shape of a tetrahedron. The Pyraminx shown below has edges 15/,/text{cm}15cm long and vertical height h=12.2/,/text{cm}h=12.2cm. The triangle drawn with dashed lines is a right triangle. What is the distance rr? Round your answer to the nearest tenth.

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Answers (1)

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Bryanna Ray · Answer 1

8.7

Step-by-step explanation:

15 squared is 225 then you subtract the square of 12.2: 148.84, then after you find that out, you find the square root of 76.16 since that's what the answer of 15 squared minus 12.2 squared, and the answer is 8.7