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How many pounds a 4 steel rebar 20' long weight's?
#4 weighs 0.668 lbs/ft so a 20' = 13.4 lbs
What is the formula for rebar?
You have to find a chart that will indicate the weight per unit of measure for the appropriate rebar size. Than take that and multiply it by the the length of the rebar. For example, a #4 rebar weighs 0.668 lbs/ft. If you have 5 @ 20-00 pieces that is 0.668 X 20 X 5 = 67 lbs. Charts are available throughout the web or at CRSI.org.
Formula for calculating rebar mass per kg?
You have to find a chart that will indicate the weight per unit of measure for the appropriate rebar size. Than take that and multiply it by the the length of the rebar. For example, a #4 rebar weighs 0.668 lbs/ft. If you have 5 @ 20-00 pieces that is 0.668 X 20 X 5 = 67 lbs. Charts are available throughout the web or at CRSI.org.
How much do 20 pencil cost if 4 pencils cost rupees three?
To help you understand this question, we will create a new temporary word. We will call every 4 pencils a "pencilor". So a "pencilor" cost 3 rupees. How many "pencilor" is there in 20 pencils? Well, 20 = 4 x 5, meaning there are 5 groups of 4 => there are 5 "pencilors". If each "pencilor" cost 3 rupees, how much does 5 cost? 3 x 5 = 15 rupees. And you are done.
How much money would you need for gas to drive 1600 miles?
That depends on the gas mileage your car gets and the cost of gas. If you get 20 miles per gallon at $4 a gallon, then cost is 1600/20 times 4 = $320
