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November 28, 2014

November 28, 2014

Posted by **angie** on Saturday, February 23, 2008 at 8:43pm.

the formula is Vsquare pyramid=1/3L^2H

- math -
**Damon**, Saturday, February 23, 2008 at 11:11pmL = 2h - 207

so

L^2 = (4 h^2 - 828 h + 42849)

(1/3) L^2 h = 91,394,008

(1/3)(4 h^3 - 828 h^2 + 42,849 h )= 91,394,008

4 h^3 - 828 h^2 + 42,849 h - 274,182,024 =0

try h = 450

364,500,000 - 167,670,000 + 19,282,050-274,182,024 =-58,069,974

try h = 475

428,687,500 - 186,817,500 + 20,353,275 -274,182,024 = -11,958,749

try h = 480

442,368,000 - 190,771,200 + 20,567,520 - 274,182,024 = -2,017,704

graph these and look for where it hits zero, probably around 481 ft

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