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If 40 foot ladder is 18 feet from a wall how high will it be on the wall?
Wiki User
∙ 15y ago
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Jamison King
Wiki User
∙ 15y agoThis problem is an example of how you can you use Pythagarus. His thereom has to do with right triangles. The formula is a2 + b2 = c2. The letters a and b represent the two legs, while c is the the hypotenuse. The hypotenuse is the side oppostie of the right angle. In the example you mentioned, the wall and the floor make a right angle. The ladder's 40 feet height is the hypotenuse. The 18 feet it is from the wall is one of legs. a = 18, b = b (the variable), c= 40. Let's plug this into the formula. 182 + b2 = 402 Then figure out what those two squared are. 342 + b2 = 1600 Then subtract the 342 to get b squared by itself. -344 -342 ------------------------ b2 = 1258 So b squared equals 1258. But you're not done. To find out what b is, you have to take the square root of each side. So your answer is 35.4682957 feet. Rounded that would be about 35.47 feet.
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A 15-foot ladder is leaning against a 30-foot wall The bottom end of the ladder is 9 feet from the wall How many feet above the ground does the ladder touch the wall?
12
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93
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16
How many square feet is 10 foot by 10 foot?
on a wall it would be 100 square feet.
How far should a 12-foot extension ladder should be placed against a wall?
3 ft
A 15-foot ladder is leaning against a 30-foot wall The bottom end of the ladder is 9 feet from the wall How many feet above the ground does the ladder touch the wall?
12
A 10 foot ladder is leaning against a vertical wall the base of the ladder is 3 feet from the wall how high is the point where the ladder touches the wall?
13
A 5 foot ladder is leaning against a 4 foot wall How many feet above the ground does the ladder touch the wall?
9
A 15 foot ladder is leaning against a 30 foot wallthe bottom end of the ladder is 9 feet from the wallhow many feet above the ground does the ladder touch the wall?
12 feet.
When a painter leans a 29 foot ladder so that the base of the ladder is 21 feet from the wall. What is the height at which the top of the ladder touches the wall?
Using Pythagoras' theorem it is 20 feet
a 12 foot ladder is placed against a wall so that the base of the ladder is 2 feet away from the wall. What is the height of the top of the ladder?
10,000 m
A 10-ft ladder leans against a wall so that the base of the ladder is 4 ft from the wall How high up on the wall will the ladder reach to the nearest foot?
14
The foot of a ladder is placed 6 feet from a wall If the top of the ladder rests 8 feet up on the wall. how long is the ladder?
62+82=36+64=100 and the squared route of 100 is 10
Ladder stand 10 foot tall when braced against a wall the bottom of the ladder is 6 foot away from the wall how far up the wall does the ladder go?
assuming the wall and ground make a 90 degree angle with one another, Pythagorean's Theorem states the ladder will go 8 feet up the wall.
What should be the horizontal distance in feet for a ladder to the wall?
The best tip I've come to is that for every four feet of height you have to climb, move the base one foot away from the wall. Better still is to have someone foot the ladder, or to fasten the ladder with a rope, preferably near the top of the ladder to avoid the ladder sliding sideways.
A 15 foot ladder is leaning against a 30 foot wall The bottom end of the ladder is 9 feet from the wall How many feet above the ground does the ladder touch the wall?
12 feet. It is actually pretty easy, if you remember that a 3x4x5 triangle is always a right angle. divide by 3 and you have the 3 and 5 all you need is the four multiplied by 3.
A 12 foot ladder is placed so that it is reached 9 feet up the wall how far is the foot of the wall from the buliding?
Assuming you mean "foot of the ladder": Sqrt(144 - 81) ie sqrt 63 = 7 feet 11¼ inches. If you mean what you wrote then zero distance!
