21
sqrt(105) = 10.247 ft (rounded)
Using Pythagoras' theorem the length of the ladder is 20.248 feet
Using Pythagoras' theorem the the foot of the ladder should be 12 feet away from the base of the building.
Using Pythagoras' theorem it is 20 feet
Definately 15. And a half.
13
Using Pythagoras' theorem the length of the ladder is 20.248 feet
10,000 m
Using Pythagoras' theorem the length of the base is 7 feet
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?
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.
Using Pythagoras' theorem the the foot of the ladder should be 12 feet away from the base of the building.
12 feet
Using Pythagoras' theorem it is 20 feet
he should bud the ladder so it wouldn't be able to reach
It will be a square shape and have an area of 169 square feet
247 squared feet
Definately 15. And a half.