Should EFT payments also be recorded in cash payments journal​

Yes I believe

Explanation:

EFT payments are just another form of payments (electronic way) and these can definitely be recorded in cash payment journal (or also known as cash disbursement journal). These journals will record any cash transfer, not just that of physical cash. This includes checks and electronic funds transfers or any other cash equivalent.

Here's more on this:

https://simple-accounting.org/cash-disbursement-journal/

https://www.investopedia.com/terms/c/cash-disbursement-journal.asp

bd = 9 cm

step-by-step explanation:

in a 30°-60°-90° triangle, the ratio of side lengths is 1 : √3 : 2. that is, the longest side (hypotenuse) is twice the length of the shortest side.

all of the triangles in your geometry are 30°-60°-90° triangles. ac is the hypotenuse of δacd, and the short side of δabc.

the short side ad of δacd will be half the length of ac, so 3 cm. the hypotenuse ab of δabc will be twice the length of ac, so 12 cm. segment bd is the difference of the lengths ab and ad, so is

bd = ab -ad

bd = 12 cm - 3 cm = 9 cm

comment on side length ratios

you can figure the ratios of side lengths in a 30°-60°-90° triangle by considering the trig ratios of the angles. or you can figure the length of the altitude of an equilateral triangle of side length 2 using the pythagorean theorem.