Answer:
The center of the tetrahedron divides each of the four heights (or medians) in the ratio 1:3 (in an equilateral triangle the corresponding ratio is 1:2). The smaller part is also the radius of the inscribed sphere. Therefore the radius of this sphere is one quarter of the height or 9 in your case.
Use m.a.t.h.w.a.y. online calculator to determine the answer: (s - 1)
Answer:
x = -9
Step-by-step explanation:
3×( -3 ) + 4 gives -9 + 4 = 5 hence proved
Answer:
it should be 70
Step-by-step explanation: