Is idenentity property (4)(1/4)=1?

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?

Solve for x and select the correct answer

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)