What is 18坪? (じゅうはち + つぼ = ?)


What is 18坪? (じゅうはち + つぼ = ?)

I found this sentence

１８坪の店内【てんない】は落【お】ち着【つ】いた雰囲気【ふんいき】で、壁面【へきめん】にはぐるりとＳＰ、ＬＰレコードなどが１万枚【いちまんまい】並【なら】ぶ

<https://www.yomiuri.co.jp/culture/music/20220701-OYT1T50230>

I did not know how to pronounce １８坪, but I found this explanation:

One or two 坪【つぼ】 are read using 和語【わご】, three can be 和語【わご】 or 漢語【かんご】, and
the rest are (you guessed it) 漢語【かんご】

<https://www.tofugu.com/japanese/japanese-counters-list/>

So how does one combine じゅうはち + つぼ? I thought I'd just ask rather than guess
incorrectly, since sometimes the final 8changes in the number's pronunciation,
like in 800【はっぴゃく】 and 18歳 【じゅうはっさい】.




坪 is a traditional Japanese unit of room size which corresponds to 3.31 m2. So
18坪 is about 59.5 m2.

The kanji itself is always pronounced as つぼ without rendaku.

> One or two tsubo are read using wago, three plots can be wago or kango, and
> the rest are (you guessed it) kango.

This means _tsubo_ is counted like so:

  * 1坪: **ひとつぼ**
  * 2坪: **ふたつぼ**
  * 3坪: **みつぼ or さんつぼ**
  * 4坪: よんつぼ
  * 5坪: ごつぼ
  * 6坪: ろくつぼ
  * 7坪: ななつぼ or しちつぼ
  * 8坪: はちつぼ or はっつぼ
  * 9坪: きゅうつぼ
  * 10坪: じゅっつぼ or じっつぼ
  * 18坪: じゅうはちつぼ or じゅうはっつぼ
  * and so on

The first three are indeed very tricky, but the rest should be
straightforward. (摘み also shows this tricky pattern. ひとつまみ, ふたつまみ, さんつまみ,
よんつまみ, ...)




坪 is a traditional Japanese unit of room size which corresponds to 3.31 m2. So
18坪 is about 59.5 m2.

The kanji itself is always pronounced as つぼ without rendaku.

> One or two tsubo are read using wago, three plots can be wago or kango, and
> the rest are (you guessed it) kango.

This means _tsubo_ is counted like so:

  * 1坪: **ひとつぼ**
  * 2坪: **ふたつぼ**
  * 3坪: **みつぼ or さんつぼ**
  * 4坪: よんつぼ
  * 5坪: ごつぼ
  * 6坪: ろくつぼ
  * 7坪: ななつぼ or しちつぼ
  * 8坪: はちつぼ or はっつぼ
  * 9坪: きゅうつぼ
  * 10坪: じゅっつぼ or じっつぼ
  * 18坪: じゅうはちつぼ or じゅうはっつぼ
  * and so on

The first three are indeed very tricky, but the rest should be
straightforward. (摘み also shows this tricky pattern. ひとつまみ, ふたつまみ, さんつまみ,
よんつまみ, ...)

