Don't answer if you don't

1. a building and a flagpole cast a shadow that ends at point c in the diagram.
what is the height of the flagpole?

[see attachment]

2. the figures are similar. solve for the area of efgh.

[see second attachment]

3. triangle abc is dilated to triangle a'b'c'. triangle abc has an area of 54 cm². triangle a'b'c' has an area of 24 cm². what is the scale factor of the dilation?

[see third attachment]

a.

b.

c.

d.