Debby needed one-third of a cup of water for 1 flower if she had nine flowers how many cups wold she need

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

What percent of the circle below is shaded?

Find the area of the regular hexagon if a side is 20 cm.