The dimensions of a room are 9m×8m×6.5m. It has one door of dimensions 2 m×1.5m and two windows each of dimensions 1.5m×1m. Find the cost of whitewashing the walls at Rs6.40 per m2.

The dimensions of a room are 9m×8m×6.5m. It has one door of dimensio

1.	The dimensions of a room are 9m×8m×6.5m. It has one door of dimensions 2 m×1.5m and two windows each of dimensions 1.5m×1m. Find the cost of whitewashing the walls at Rs6.40 per m2.
Answer» The dimensions of a room are 9m $\times$ 8m $\times$ 6.5m. It has one door of dimensions 2 m $\times$ 1.5m and two windows each of dimensions 1.5m $\times$ 1m. Find the cost of whitewashing the walls at Rs6.40 per m $^{2}$ .