Answer:
[tex]224mm^{2}[/tex]
Basic fact:
area of a triangle = b x h /2
Step-by-step explanation:
we know the three main values
10mm
8mm
8mm
10 x 8 / 2
10 x 8 = 80
80/ 2 = 40
there are 4 of these
40 x 4 = 160
the base is l x w
8 x 8 = base
base = 64
64 + 160 = surface area
surface area = [tex]224mm^{2}[/tex]
the equation for this pyramid would be:
4LH (length x height) + LW( length x width)
or
4lh ( 8 x 10) + lw (8 x 8
