To find the total area available for printing, we need to subtract the area of the blank margins from the total area of each page.

The total area of each page is given by the dimensions of the page minus the dimensions of the blank margins.

The dimensions of the page are 20 cm by 14 cm.

The dimensions of the blank margins are 2.5 cm deep along each short side and 2 cm deep along each long side.

So, the dimensions of the printable area on each page are (20 - 2 * 2.5) cm by (14 - 2 * 2) cm.

This simplifies to 15 cm by 10 cm.

The total area available for printing on each page is therefore 15 cm * 10 cm = 150 cm^2.

To find the total area available for printing in the entire book, we multiply the area of each page by the number of pages.

The book contains 360 pages, so the total area available for printing is 150 cm^2 * 360 = 54,000 cm^2.

To find the area of the blank margins on each page, we need to subtract the area of the printable area from the total area of each page.

The total area of each page is 20 cm * 14 cm = 280 cm^2.

The area of the printable area on each page is 15 cm * 10 cm = 150 cm^2.

So, the area of the blank margins on each page is 280 cm^2 - 150 cm^2 = 130 cm^2.

To find the total area of the blank margins in the entire book, we multiply the area of the blank margins on each page by the number of pages.

The book contains 360 pages, so the total area of the blank margins is 130 cm^2 * 360 = 46,800 cm^2.

Therefore, the total area available for printing is 54,000 cm^2 and the area of the blank margins is 46,800 cm^2.