Question
Download Solution PDFA ladder is resting on the ground with the top end in contact with the top of a wall of a height of 12 metres. If the length of the ladder is 13 metres, at what distance from the wall is the base of the ladder on the ground?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Height of the wall = 12 metres
Length of the ladder = 13 metres
Calculations:
Let the distance of the base of the ladder from the wall be d metres.
Using the Pythagorean theorem (a2 + b2 = c2):
(distance from the wall)2 + (height of the wall)2 = (length of the ladder)2
d2 + 122 = 132
d2 + 144 = 169
d2 = 169 - 144
d2 = 25
d = √25
d = 5
∴ The base of the ladder is at a distance of 5 metres from the wall on the ground.
Last updated on Jun 24, 2025
-> The CSIR Junior Secretariat Assistant 2025 has been released for 9 vacancies.
-> Candidates can apply online from 17th June to 7th July 2025.
-> The CSIR JSA salary ranges from INR 19,900 - INR 63,200 (Indian Institute of Petroleum, Dehradun & Institute of Microbial Technology) and INR 35,600 (Indian Institute of Toxicology Research).
-> The selection of candidates for this post will be based on a Written Exam, followed by a Computer Typing Test.
-> Prepare for the exam with CSIR Junior Secretariat Assistant Previous Year Papers.