Suppose the length of a rectangle is 13 cm. Find the area if the breadth is (A) 12 cm, (B) 10 cm, (C) 8 cm.
Find the linear pattern representing the area of the rectangle. [Page No. 24]

Let breadth of rectangle be $x$ and length is given as 13 cm.

(A) $x = 12$: Area = $13 \times 12 = 156 \text{ cm}^2$

(B) $x = 10$: Area = $13 \times 10 = 130 \text{ cm}^2$

(C) $x = 8$: Area = $13 \times 8 = 104 \text{ cm}^2$

Hence, the linear pattern is given by $A = 13x$.