Question 171104
Starting with:
{{{V = Bh}}} where B = area of the base and h = height (or thickness in this problem).
Find the area of the base (B = W*L). Convert dimensions to inches:
W = 13ft 7in = 13(12)+7 = 163 in.
L = 27ft 7in = 27(12)+7 = 331 in.
{{{B = 163*331}}}
{{{B = 53593}}}sq.in.
To find h, the thickness, solve the volume formula for h.
{{{V = Bh}}} Divide by B.
{{{h = V/B}}} V is given as 1,107,096 and B = 53593, so...
{{{h = 1107096/53593}}}
{{{h = 20.657}}}inches.
The thickness is 20.7 inches.