Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

find the curved surface area of cone using the given figure. given base diameter 12 cm and the angle at the conical vertices is 120

Asked by 27th February 2013, 12:14 PM
Answered by Expert
Answer:
Radius of the cone = 12/2 cm = 6 cm
Apex angle = 120
Slant height(l) = radius/sin(120/2) (Considering trignometry in the cone triangle)
l = 6/sin60
l = 12/sqrt(3)
l = 4*sqrt(3)
 
Curved surface area of a cone = pi*r*l = pi * 6*4*sqrt(3) = 130.53 cm2
Answered by Expert 28th February 2013, 6:03 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp