The surface area of a balloon (which depends on the amount of air inside) is 2 square meters.
A. Area(air) > 2
B. Air(Area) < 2
C. Air(area) = 2
D. Area(air) = 2
(15 points)

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 is the area of triangle abc if a = 8, b = 11, and c = 15?

What is the measure of angle afe? 79 81 91 99