The big rectangle is divided into four parts. P is a square. The area of Q is thrice that of P. The area of R is 42 cm2 more than the area of Q. What is the perimeter of the big rectangle?
(A) 90 cm
(B) 76 cm
(C) 80 cm
(D) 88 cm
The big rectangle is divided into four parts. P is a square. The area of Q is thrice that of P. The area of R is 42 cm2 more than the area of Q. What is the perimeter of the big rectangle?
(A) 90 cm
(B) 76 cm
(C) 80 cm
(D) 88 cm