You Have To Do a^2+b^2=c^2
Work each one out as follows
value 60 -
answer = (60 - 43.8) / 8.7 = 1.862 This is sometimes called the x score
for 40 its (40-43.8) / 8.7 = -0.4368
the others are calculated in the same way
This picture has the answer written with full explanations. Hope it helps.
Answer:
72
Step-by-step explanation:
for the rectangles you use the formula :
a=lw 3x6=18x2=36 + 4x6=24
and for the triangles you use:
a=1/2bh 3x4=12/2 + 3x4=12/2
then you add it all together
36+24+12=72