A rocket is launched from a launch site. it’s path can be modeled by the graph below

Pls! does anybody know a shortcut for answering these types of questions in the future?

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

Find the equation using the point (4,8)