He Needs 3 More Inches Because 16 Feet Converted Into Inches Is 192 Inches. If You Do 192 - 189 You Have 3 Left Over. Therefore He Needs 3 More Inches To Pull Vault Over A Bar That Is 16 Feet High
12/45 = fracción propia24/5 = fracción impropia
So hmm notice the picture below
the pyramid itself, is really, just one regular hexagon, at the bottom
and 6 triangles, stacked up at each other at the edges
now, if you just get the area of the regular hexagon, and the 6 triangles, add them up, that'd be the total surface area of the pyramid then

now, for the triangles, well, area of a triangle is 1/2 bh, as you'd know, and you have both
B. 10 square root 5
hope this helps:)
pls mark thanks and brainliest:)
Answer is 143. See picture for explanation