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】.