Class 9 Exam  >  Class 9 Questions  >  the radius and slant height of a cone are in ... Start Learning for Free
the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius
Verified Answer
the radius and slant height of a cone are in the ratio 4:7 if its curv...
The ratio of the radius and height of the cone is 4 : 7.

Let the radius of the cone be 4x and the height be 7x

So, 

Curved surface area of the cone = πrl

792 = 22/7*4x*7x 

x^2 = (792*7)/(22*4*7)

x^2 = 9

x = √9

x = 3 cm

So, the radius of the cone = 4 * 3 = 12 cm.
This question is part of UPSC exam. View all Class 9 courses
Explore Courses for Class 9 exam

Top Courses for Class 9

the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius
Question Description
the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius.
Solutions for the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius in English & in Hindi are available as part of our courses for Class 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius defined & explained in the simplest way possible. Besides giving the explanation of the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius, a detailed solution for the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius has been provided alongside types of the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius theory, EduRev gives you an ample number of questions to practice the radius and slant height of a cone are in the ratio 4:7 if its curved surface area is 792cm2 find its radius tests, examples and also practice Class 9 tests.
Explore Courses for Class 9 exam

Top Courses for Class 9

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev