10.9 [11]
This describes a right triangle. This triangle has a base (X ) of 3 ft, a opposite side ( Y) of 9 ft. So, you are looking for the hypothenuse. Use the Pythagoreum theory. In this case. Your ladder length is called H. H^2 = X^2 + Y^2 H = sqrt X^2 + Y^2
Well, using a^2 + b^2 = c^2, where a and b are the legs and c is the hypotenuse, you need to square 39 and 36. Then your equation should look like a^2 +1296 = 1521, then solve for a^2, getting the variable by itself, so you have a^2 = 225. Then take the square root of both sides leaving you with a= 15. So, the ladder must be placed 15 feet from the base of the house.
If it's enough to be classified as a tornado, it will damage your house. Generally, winds in excess of 60 mph are considered sufficient to cause visible damage, though at this point it will be superficial unless a tree falls on ths house.
They Don't
Suppose you want to get from your house, located on the south-west corner of a field (rectangular shaped), to your friend's house, located in the north-east corner of the field. You can follow a road 4 miles East then 5 miles North for a total of 9 miles. You want to know how far it would be to get to your friend's house if you walked across the field. By pythagoras's theorem you know the distance from your house to your friend's house is sqrt(4^2+5^2)=6 miles. So going across the field saves 3 miles. that's your answer please ask another question we know everything
8
Adjective
A ladder leaning against a wall. The slated part of the roof of a house.
It can be any angle that is more than zero degrees and less than 90 degrees. <><><> It will be an ACUTE angle, and if the ladder is placed properly (1 ft out for each 4 ft up) the angle between wall and ladder will be ABOUT 18 degrees.
The slope is 4 (no units), and the ladder is 16.492 feet long. (rounded)
You lean a ladder that reaches to the top of a house. You want to measure how tall the house is, but you can't measure it. The base of the ladder is 6 feet away from the house and the ladder is 26 feet long. How tall is the house?
There are many places one can purchase a ladder for a bookcase. The most reliable online outlet for purchasing this item would be Amazon. You can also visit stores such as target or Walmart. There is also an episode on "This Old House" that might be useful in constructing your own ladder for a bookcase.
Round the base angle to 70 degrees and use the sine ratio: 30*sine 70 degrees = 28.19077862 feet Height of ladder from the ground = 28 feet to 2 s.f.
climb the rope ladder
With a measuring tape and a ladder
By Pythagoras, if the initial height of the ladder is H1 feet, then 252 = H12 + 92 so H12 = 252 - 92 = 544 so that H1 = 23.32 ft. After the move, the base of the ladder is 15 ft from the wall. If the height now is H2 feet, then 252 = H22 + 152 so H22 = 252 - 152 = 400 so that H2 = 20 ft. So the ladder will slide down 3.32 ft or 3 ft 3.9 inches, approx.
One can read about ladder safety in the home online on sites such as Safety at Home, This Old House, Old House Online, Step Ladder Safety Tips, and Ladder Safety. You can get ladder safety information from home improvement stores like Lowes and Home Depot.