CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Select Date
Tags:

Articles

Discussions
Submit Discussion
firoj

· started a discussion

· 1 Months ago

How to solve this kindly Explain More (Question: 232761.0 )

Hi

Question:
If both the radius and height of a right circular cone are increased by 20%, its volume will be increased by: 
Options:
A) 20%
B) 40%
C) 60%
D) 72.8%
Solution:
Ans: (d)


Hina

· commented

· 1 Months ago

volume=1/3*pi* (r^2)* h
since r is coming 2 times to due to r, new volume increases by r^2 and due to h , it increases by one time due to h so,
r- 25-->>36
h- 5-->>6
-----------------
125-->>216
so increase in vol = (216-125)*100 = 72.8%
--------------
125
-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