I need help solve please.

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?

If g^-1(x) is the inverse of g (x) which statement must be true

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.