Please Help if not the right answer you will get reported if u are wasting this question for points

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?

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r