No products in the cart.

Two circular cylinders of equal volume …

CBSE, JEE, NEET, CUET

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Two circular cylinders of equal volume have their heights in the ratio 1:2 . The ratio of their radii is

Posted by Sharma Sharma 1 year, 9 months ago

CBSE > Class 10 > Mathematics

2 answers

Lakshaya Swarnareka 1 year, 9 months ago

Let r1 and h1 be the radius and height of the first cylinder, then Volume = πr21h1 Similarly r2 and h2 are the radius and height of the second cylinder ∴Volume=πr2h2 But their volumes are equal, ∴πr21h1=πr22h2 =r21r22=h2h1 ⇒h2h1=r22r21 But h1h2=12 ∴r22r21=12⇒r21=2r22 ∴r21r21=21⇒r1r2=√21 ∴ Ration in radii = √2 : 1 Hence the correct answer is √2 : 1

Aastha Vats 1 year, 9 months ago

Let the height be h and 2h and radii be r and R. 22/7 × r^2 × h = 22/7 × R^2 × 2h r^2 × h = R^2 × 2h r^2/R^2 = 2h / h r^2 / R^2 = 2/1 r/R = root 2 / 1 r:R = root 2 : 1

ANSWER

http://mycbseguide.com/examin8/

Related Questions

Find the sum of the odd no. Between 0 and 50

Posted by Kanika . 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Find cosec 30 degree and cause 60 degree geometrical

Posted by Hari Anand 2 weeks, 2 days ago

CBSE > Class 10 > Mathematics

0 answers

Water

Posted by S Prajwal 2 weeks, 2 days ago

CBSE > Class 10 > Mathematics

0 answers

Is it possible to design a rectangular mango Grove whose length is twice it's breadth, and the area is 800m²? If so, find it's length and breadth

Posted by Akshata Choukse 4 months ago

CBSE > Class 10 > Mathematics

0 answers

If 1/2 is a root of equation x^2+kx- 5/4 =0 , then what is the value of k

Posted by Parinith Gowda Ms 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Find the nature of quadratic equation x^2 +x -5 =0

Posted by Parinith Gowda Ms 4 months ago

CBSE > Class 10 > Mathematics

0 answers

(A + B )²

Posted by Abhishek Gupta 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Venu Gopal has twice

Posted by Lakshay Kumar 1 week, 2 days ago

CBSE > Class 10 > Mathematics

0 answers

sin60° cos 30°+ cos60° sin 30°

Posted by Vanshika Bhatnagar 3 months, 4 weeks ago

CBSE > Class 10 > Mathematics

2 answers

X-y=5

Posted by Kishan Thakur 1 month, 3 weeks ago

CBSE > Class 10 > Mathematics

1 answers

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App