A rectangle has a perimeter of 60 cm. The length and breadth of rectangle is (k + 4) cm and (3k - 2) cm respectively.

50. The value of k is

(A) 7

(D) 29

(D) 23, 11

(C) 12

(B) 9

51. The length and breadth of the rectangle is (A) 11, 7 (B) 11, 19 (C) 19, 20

52. If perimeter of rectangle is equal to perimeter of square, then side of square is

(A) 60cm (B) 18cm (

C) 225cm(D) 15cm