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A 7.85-inch iPad would be 40% larger than existing 7 inchers

Posted: , by Victor H.

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A 7.85-inch iPad would be 40% larger than existing 7 inchers
The rumor of Apple preparing a miniature version of the iPad has persisted in the last couple of weeks, and while most sources agree that the upcoming tablet will feature a 7.85-inch screen, we and the majority of publications have sometimes compared it to other 7-inch tablets. There’s a huge difference between a 7.85-inch display and a 7-inch one, though.

How much, you might wonder. Truth is that a 7.85-inch iPad mini would be nearly 40% larger than 7-inch tablets.

It’s all simple maths. The screen area of a 7.85-inch tablet comes at around 30 square inches, which is nearly 40% more than the 22 square inches you get on 7-inch slates.

Check out the picture below, showing how different aspect ratios and diagonal screen sizes measure in terms of pure screen area available. So would it be appropriate to call the 7.85-inch mini iPad one of the 7-inch tablets? Not at all, but comparing it with seven inchers is, of course, inevitable.

source: Trojan Kitten via Daring Fireball

A 7.85-inch iPad would be 40  larger than existing 7 inchers

22 Comments
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posted on 11 Jul 2012, 08:14 1

1. Droid_X_Doug (Posts: 5281; Member since: 22 Dec 2010)


Doesn't exactly look like 1/2 of a standard iPad....

posted on 11 Jul 2012, 08:45 3

4. cepcamba (Posts: 717; Member since: 27 Feb 2012)


According to the article the standard iPad is 50% bigger, not 200% (or 2X) bigger.

posted on 11 Jul 2012, 08:35 2

2. ahomad (Posts: 131; Member since: 15 May 2012)


are you for real??
the different between 7 and 7.7 is just an extra 10%, so the different between 7 and 7.85 is not more than 13%.

if what you are saying is true, then the 9.7 inch tab is 120% bigger than the 7 inch which means one 9.7 ich tab is even bigger than two 7 inch tabs which is clearly not true.

you can even look at it with naked eye (without using math) 40% is nearly 50% extra, does it look from the image that the 7.85 is 1.5 X the size of the nexus 7???

posted on 11 Jul 2012, 08:43 3

3. cepcamba (Posts: 717; Member since: 27 Feb 2012)


You know what a surface area is?

posted on 11 Jul 2012, 08:58 5

5. ardent1 (Posts: 1983; Member since: 16 Apr 2011)


> the different between 7 and 7.7 is just an extra 10%, so the different between 7 and 7.85 is not more than 13%.

Because you need to understand geometry -- for a given DIAGONAL, the area of a rectangle is maximized when it is a square. That is to say, the more square-like the device, the more display area, other things being equal. A square has a aspect ratio of 1.0 meaning the mini iPad with a 4/3 aspect ratio has far more display area than the same tablet with a 17/10 or 16/9 aspect ratio for the same diagonal, respectively.

> if what you are saying is true, then the 9.7 inch tab is 120% bigger than the 7 inch which means one 9.7 ich tab is even bigger than two 7 inch tabs which is clearly not true.

Do the math. Steve Jobs pointed out that the iPad had twice the display area of the first wave of 7" android tablets.

The best way to prove this is using calculus. However, if you understand trigonometry, you will know that if you bisect a square diagonally to form two isosceles triangles, the angles are 45 degrees, 90 degrees and 45 degress for each triangle, respectively. The key point is the tangent of 45 degrees is 1.0. The area of a square is simply twice the area of each isosceles triangle (recall the area of a triangle is 0.5*base*height). When OEMs use narrow displays, the tangent is no longer 45% and the area of each isosceles triangle is smaller, respectively, thus reducing the total area of the rectangular screen.

I have been stating for a long time that android devices with large diagonals tell us very little about the display area. Most android devices like HTC have long and narrow screens, respectively.

posted on 11 Jul 2012, 11:08 1

11. xtian1103 (Posts: 352; Member since: 11 Feb 2012)


my eyes bleed while reading your analyses. i kardashianly suck on math!

posted on 11 Jul 2012, 15:49

18. sithman (banned) (Posts: 299; Member since: 21 Apr 2012)


Good one lol

posted on 11 Jul 2012, 12:58

14. PapaSmurf (Posts: 6621; Member since: 14 May 2012)


Well done. +1.

posted on 11 Jul 2012, 10:04 1

8. maxican16 (Posts: 361; Member since: 29 Sep 2011)


Math FAIL.

posted on 11 Jul 2012, 14:53

17. maxican16 (Posts: 361; Member since: 29 Sep 2011)


Truth hurts I guess.

posted on 11 Jul 2012, 09:01 5

6. nak1017 (Posts: 328; Member since: 08 Jan 2010)


That makes the rest of the tablet 40% larger too, so those of you who want to smaller tablet remember to take that into account

posted on 11 Jul 2012, 14:44 1

16. c.hack (Posts: 487; Member since: 09 Dec 2009)


So, what you are saying is that a bigger tablet is ..... bigger? Pure genius!!

posted on 11 Jul 2012, 17:08 2

19. nak1017 (Posts: 328; Member since: 08 Jan 2010)


I'm saying that a Apple made a tablet with 40% more surface across the board, they didn't just fit 40% more screen on the same surface area. So, if you're looking for a tablet that's kindle-sized, look elsewhere as Apple's mini-pad will be 40% bigger and might not fit in your purse.

posted on 11 Jul 2012, 09:04 5

7. phitch (Posts: 214; Member since: 06 Mar 2012)


For all those videos you will watch in 4/3...

posted on 11 Jul 2012, 10:06 4

9. bayusuputra (Posts: 941; Member since: 12 Feb 2012)


and 100-and-40 % more expensive, too..

posted on 11 Jul 2012, 10:07 1

10. maxican16 (Posts: 361; Member since: 29 Sep 2011)


The 4:3 aspect ratio is outdated and no longer the standard. This will go perfectly with Apple's stale app launcher "operating system".

posted on 11 Jul 2012, 11:22 2

12. appleDOESNT.com (Posts: 389; Member since: 19 Nov 2011)


Whole point of 7 inchers is to make them portable, uh smaller, not bigger lol apple and the apple herd raw rawing this. Why bother apple? 7.85 and 9.7 are virtually the same. epic fail

posted on 11 Jul 2012, 11:34 1

13. quryous (banned) (Posts: 106; Member since: 07 Mar 2012)


Don't know why people think it would be compaired to a 7" tab. Can't even figure why some would want to call it a "Plus sized 7", when in reality it is just a dainty 9" tab.

posted on 11 Jul 2012, 13:02 1

15. willard12 (Posts: 546; Member since: 04 Jul 2012)


Has phonearena ever done the math on 10.1 in. vs. 9.7 in.?

posted on 12 Jul 2012, 00:12 1

20. pellegrini (Posts: 83; Member since: 14 Jun 2012)


I guess when Steve Jobs said that 7" tablets are "Dead on arrival", he was talking about this tablet!

posted on 12 Jul 2012, 00:43 1

21. Life_Engineer (Posts: 6; Member since: 28 Jun 2012)


Damn! I'm new to phoneareana but i'm good!!!

From the headline of the subject I am able to know that Victor H. is the writer!!!

Damn you're such an iFanboy!!!

posted on 12 Jul 2012, 01:09

22. roscuthiii (Posts: 1717; Member since: 18 Jul 2010)


Yeah... you can just look at the article titles and tell which ones he wrote.

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