Find out the answer please i will mark brainliest

Can some one me, i’ve been asking for so long

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?

Does the point (1, sqrt 7) lie on circle shown.