Answer: The quadrilateral used here is a trapezium.
3x - 15
less than or more than trick-------> the number before those words should be the second number in the equation
I am assuming 33 is B^(2/3) times B^(1/2)
See the following image
9514 1404 393
Answer:
316 lumens/m²
Step-by-step explanation:
We assume your intensity function is ...
f(x) = 50,000(0.975^x) . . . . x meters below the surface
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Use 200 for x and do the arithmetic.
f(200) = 50,000(0.975^200) ≈ 316 . . . . lumens/m²