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


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


Mon to Sat - 11 AM to 8 PM

CBSE - IX - Mathematics - Surface Areas and Volumes

A corn cob,shaped somewhat like a cone,has the radius of it'd broadest end as 2.1cm and length as 20cm.If each 1cm sq. of the surface of the cob carries an average of four grains,find how many grains you would find on the entire cob?

Asked by ROHAN CHANDRA 13th February 2011, 6:44 PM
Answered by Expert


Dear Student,
Here is the solution:
Since the grains of corn are found on the curved surface of the corn cob.
Total number of grains on the corn cob = Curved surface area of the corn cob x Number of grains of corn on 1cm2
Now, find the curved surface area of the corn cob.
r = 2.1 and h = 20
Let l be the slant height of the corn cob. Then,
Team Topperlearning
Answered by Expert 14th February 2011, 8:59 AM

Rate this answer

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Report an issue
Your answer has been posted successfully!

Related Question

Answered by Expert
Answered by Expert
Answered by Expert