Question

ladder leans against a 15-foot-tall building to form a right triangle. The ladder is placed so it is 8 feet from the base of the building. What is the length of the ladder?

Answer 1

GO PYTHAGORAS


for a right triangle with legs legnth a and b with hyptonuse c,
the legnths of the sides relate as follows
a^2+b^2=c^2

where the wall meets the ground is the right angle
legs are 15 and 8
hypotnuse=c=legnth of ladder
15^2+8^2=c^2
225+64=c^2
289=c^2
sqrt both sides
17=c

the legnth of the ladder is 17ft