The head of a nail is circular, as shown. The head of this nail has a diameter of 10 millimeters. Which measurement is closest to the area of the head of this nail in square millimeters? 15.7 mm2 314 mm2 78.5 mm2 62.8 mm2

Ill mark the brainliest if you me with the these three questions 7,8,9

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

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