Could someone provide this device's actual display area (in cm), length * height? I am considering purchasing it for viewing ppt and pdf would like to if it will be enought

Kobo Libra Colour | eReader | 7” Glare-Free Colour E Ink Kaleido™ 3 Display | Dark Mode Option | Audiobooks | Waterproof | Black (White) : Amazon.in: Computers & Accessories