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Hi,

P = kd where P = pressure, d = depth, and k = proportionality constant

180 = k(60)

3 = k so the equation is y = 3x.

When x is 20 feet, then y = 3(20) = 60

The pressure was 60 pounds per square inch. <==ANSWER

I hope that helps!! :-)

the pressure at 20 feet should be 60 pounds per square inch

u set it up as a proportion and cross multiply then divide:

60/180=20/x, x=60 per lb square inch

You need to multiply the cross-sectional area of a regular hexagon (with a side of 3 inches) by the length of the prism to get its volume, and then multiply by density to get the weight. Don't forget to divide by 12 in converting inches to feet.

A regular hexagon can be decomposed into six equilateral triangles, each of which can be split into a pair of 30-60-90 right triangles. Divide and conquer!

does this help?? Sorry if it doesnt make sense

If you've had physics, you'd know it's a linear relationship:

60 ft/180 lb per in2 = 20 ft/ x lb per in2

solve for x.

If it varies directly it means that

preasure = x(depth)

NOT: x(depth)^2

so if it is 180psi @ 60ft

then it would be 180*20/60 at 20 feet = 60psi

60psi? 1/3 the depth = 1/3 the pressure. unless it changes exponentially

wouldn't it be a proportional thing??

like if at 60ft it's 180 lbs. per square inch.

then at 20ft wouldn't it be 60 lbs. per square inch??

sorry for answering a question with a question,

i just wanted to share my thoughts and see if it helped.=].

60 per pounds sq inch

well obviously its 60 pounds if this is a see who is smarter question...