< PQR is a right-angled triangle
PR2 = 242 + 102 = 676
PR = √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
