thatgirlgamer20
thatgirlgamer20 thatgirlgamer20
  • 22-01-2018
  • Mathematics
contestada

PLEASE HELP ME!!!!
Given: regular square pyramid
Find Py

PLEASE HELP ME Given regular square pyramid Find Py class=

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jdoe0001 jdoe0001
  • 22-01-2018
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MsEHolt MsEHolt
  • 13-02-2019

Answer:

3√3

Step-by-step explanation:

Taking just the face that includes both P and y, we have a triangle with a base of 6 and a slant of 6.  Py is the perpendicular bisector of this base; this gives us a smaller right triangle with a leg of 6/2 = 3 and a hypotenuse of 6.  Using the Pythagorean theorm,

3²+b²=6²

9+b² = 36

Subtract 9 from each side:

9+b²-9 = 36-9

b² = 27

Take the square root of each side:

√(b²) = √27

b = √(3*3*3) = √(3²*3) = 3√3

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