Find the area of the circle with a radius of 2 cm.

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.