Question 963640
.
A=area of trapezoid; {{{b[1]}}}=base one=30cm; {{{b[2]}}}=base two=15cm; h=height=8cm
Convert all measurements to millimeters
{{{b[1]}}}=300mm
{{{b[2]}}}=150mm
{{{h}}}=80mm
.
{{{A=((b[1]+b[2])/2)h}}}
{{{A=((300mm+150mm)/2)80mm}}}
{{{A=(450mm/2)(80mm)}}}
{{{A=18000mm^2}}}
Area of small triangles is 45 sq mm. so:
{{{18000mm^2/45mm^2=400}}}
ANSWER: 400 of the small triangles will fit on the grid.