Question 954900
a=side of square=5ft; h=height=3ft; {{{A[L]}}}=lateral area (surface area without base)
{{{A[L]=a*sqrt(a^2+4h^2)}}}
{{{A[L]=5ft*sqrt((5ft)^2+4(3ft)^2)}}}
{{{A[L]=5ft*sqrt(25ft^2+36ft^2)}}}
{{{A[L]=5ft*sqrt(61ft^2)}}}
{{{A[L]=5ft*7.81ft}}}
{{{A[L]=39ft^2}}} The ramp will take 39 square feet of plywood.
2 sheets of plywood ={{{2(4ft*8ft)=2(32ft^2)}}}={{{64ft^2}}}
{{{64ft^2-39ft^2=25ft^2}}} ANSWER: There will be 25 square feet of plywood left over.