< PQR is a right-angled triangle
PR2^22 = 242^22 + 102^22 = 676
PR = 676\sqrt{676}676 = 26cm
PQRTS is a square and PR = 26cm. meaning the remaining sides of the square are 26cm each
Therefore, the perimeter of PQRST = 26 + 26 + 26 + 24 + 10 = 112cm
