
<em>Golden ratio, also known as the golden section, golden mean, or divine proportion, in mathematics, the irrational number (1 + Square root of√5)/2, often denoted by the Greek letter ϕ or τ, which is approximately equal to 1.618.</em>
Answer:
3 hours
Step-by-step explanation:
4.5*(2/3)
= 3 hours
Yea, it’s 180cm^3
V=bh
V= 20cm • 9cm
V=180cm^3
Have a good day :)