Suppose the length of a rectangular box is 7 cm and breadth is 11 cm. Find the volume if the height is
 (A) 5 cm, (B) 9 cm, (C) 13 cm. Find the linear pattern representing the volume of the rectangular box.
[Page No. 24]

Given length = 7 cm, breadth = 11 cm

Volume = $7 \times 11 \times h = 77h$

(A) $h = 5$:

Volume = $77 \times 5 = 385 \text{ cm}^3$

(B) $h = 9$:

Volume = $77 \times 9 = 693 \text{ cm}^3$

(C) $h = 13$:

Volume = $77 \times 13 = 1001 \text{ cm}^3$

Linear pattern: $V = 77h$