Una estructura de concreto cuyo peso es de 8 500 N se apoya sobre un área de 25 cm2,hallar la presión ejercida sobre su base

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

(60 points) explain this in detail

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap