So, we know that each year, the height increases by 2 inches. To know the current height of the mountain, we will just multiply the rate by the number of years.
The current height = 2 * 40,000,000 = 80,000,000 inches
Now, we need to convert the inches to feet as follows:
1 inch = 0.08334 ft, therefore:
height of Himalayas = 6667200 ft