CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Select Date
Tags:

Articles

Discussions
Submit Discussion
Chirag Tyagi

· started a discussion

· 1 Months ago

Unable to understand (Question:114650.0)

Please explain in detail

Question:
A ladder leans against a vertical wall. The top of the ladder is 8 meter above the ground. When the bottom of the ladder is moved 2 meter farther away from the wall, the top of the ladder rests against the foot of the wall. What is the length of the ladder?
Options:
A) 20 meter
B) 16 meter
C) 18 meter
D) 17 meter
Solution:

Let the length of the ladder be x meter. We have

82 + y2 = x2 and (y + 2) = x

Hence, 64 + (x - 2)2  = x2

⇒ 64 + x2 — 4x + 4 = x2

⇒ 68 = 4x ⇒ x = 17 meter

-logo
We at aim to provide most comprehensive content & test for practice which is carefully divided into various chapters and topics to help you focus on your weak areas.Our Practice mock test gives you unmatched analytics to help you realize your strong areas,time management and improvement areas.Our Short & Crisp notes on each topic will help you to quickly revise the topic along with the tips & tricks of the exams.
More About
-Info
-Info

Mobile App

Get it on Google Play
About Us Campus Ambassador Careers Contact Us Refund Policy

All Rights Reserved Top Rankers

User Policy
Disclaimer
Terms & Conditions