The area of a trapezium formed by incre...

The area of a trapezium formed by increasing one longer side of a rectangle and joining it with opposite side is `42 cm^2`. If the sides of rectangle are 4 cm and 9 cm respectively, thenn the length is increased by
(A) 3 cm (B) 4 cm (C) 5 cm (D) None

A

B

D

C

A

D

C

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