Question 194948
Area of a trapezoid: {{{A = ((b[1] + b[2])/2)h}}}
We have all these numbers but the second base. So we can use this equation to find it:
{{{112 = ((11 + b[2])/2)(8)}}}
Simplifying the right side we get:
{{{112 = ((11 + b[2])/2)(8) = (11 + b[2])4 = 44 + 4b[2]}}}
Solving for the variable we subtract 44 from both sides:
{{{68 = 4b[2]}}}
Divide by 4:
{{{17 = b[2]}}}