Return on assets (ROA) equals . total assets divided by costs of goods sold net profit margin times asset turnover return on investment divided by return on net worth current assets divided by total assets

net profit margin times asset turnover.

Explanation:

Return on assets is a financial ratio that shows to how efficient an entity's management is at using its assets to generate income.

A company's return on assets (ROA) is calculated as the ratio of net income in a given period to the average total assets for the period.  It is further determined as net profit margin times asset turnover.

Given that

Net profit margin = net income/sales

assets turnover = sales/ average total asset

Return on assets = Net profit margin * assets turnover

= net income/sales * sales/ average total asset

=  net income/average total asset

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explanation:

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.