Answer:
a = 4
Step-by-step explanation:
ur welcome
Answer:
240 units I think
Step-by-step explanation
20 by 2 equal 10 you now know the triangle length
then 4 X 10 equal 40 by 2 equal 20 by 2 equal 40. area of both triangles
20 X 10 equal 200 length of rectangle add both and equal 240.
The planar
density for the (100) plane is
PD100 (Ni)=1/(4R²)=1/(4*0.125²)=16.00 nm-2 = 1.6 x10^19 m-2
the answer is 1.6 x10^19 m-2