SOLUTION: In the diagram below, point X is the intersection of the two diagonals TW and UV of the cubical box illustrated. The shortest distance from point T to point Z is 4 sqrt3 cm. Find t

Algebra ->  Surface-area -> SOLUTION: In the diagram below, point X is the intersection of the two diagonals TW and UV of the cubical box illustrated. The shortest distance from point T to point Z is 4 sqrt3 cm. Find t      Log On


   



Question 1151099: In the diagram below, point X is the intersection of the two diagonals TW and UV of the cubical box illustrated. The shortest distance from point T to point Z is 4 sqrt3 cm. Find the area in cm2, of triangle XYZ.
Sry bout the other one.
Diagram: https://imgur.com/a/ciK5pIK

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
point X is the intersection of the two diagonals TW and UV of the cubical box illustrated.
The shortest distance from point T to point Z is 4sqrt%283+%29cm. and it is
TZ+= solid diagonal
Again, by the Pythagorean theorem we know that
%28TZ%29%5E2+=+%28WZ%29%5E2+%2B+%28WT%29%5E2
%284sqrt%283+%29cm%29%5E2+=+%28WZ%29%5E2+%2B+%28WT%29%5E2........since cube, all sides are equal, so WV=WU=WZ and %28WT%29%5E2=%28WV%29%5E2%2B%28WU%29%5E2=%28WZ%29%5E2%2B%28WZ%29%5E2=2%28WZ%29%5E2
16%2A3cm%5E2+=+%28WZ%29%5E2+%2B+2%28WZ%29%5E2
16%2A3cm%5E2+=+3%28WZ%29%5E2
%2816%2A3cm%5E2%29%2F3+=+%28WZ%29%5E2
%28WZ%29%5E2=16cm%5E2
WZ=4cm........since cube, ZY=4cm
point X is the intersection of the two diagonals,+XZ=XY
triangle is isosceles, and altitude from X to ZY will bisect+ZY, let say at point M and XM divides triangle XYZ into two right triangles
altitude from X+to WV will bisect WV, let say at point N, and the length of XN+=2cm
now, connect points N and M and you got right triangle XNM whose side XM is altitude from X to ZY
sides of this right triangle are:
XN+=2cm
NM=WZ=4cm
find altitude XM:
%28XM%29%5E2=%282cm%29%5E2%2B%284cm%29%5E2
%28XM%29%5E2=4cm%5E2%2B16cm%5E2
%28XM%29%5E2=20cm%5E2
XM=sqrt%2820cm%5E2%29
XM=sqrt%284%2A5%29cm
XM=2sqrt%285%29cm
then, the area of triangle XYZ will be:
A=%281%2F2%29ZY%2AXM
A=%281%2F2%294cm%2A2sqrt%285%29cm
A=%281%2Fcross%282%29%294cm%2Across%282%29sqrt%285%29cm
A=4sqrt%285%29cm%5E2