Find the area of the shaded regions. Give your answers as a completely simplified exact value in terms of pi (no approximations)

George is 187 cm tall. his son, ralph, is 142 cm tall. who casts the longer shadow. george when the sun is 65° above the horizon, or ralph when the sun is 56° above the horizon? how much longer? (nearest centimeter)

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

Which of the following is an equation of a line parallel to the equation y=4x+1?