How to prove the csa of a cone
Answers
Answered by
1
I hope help you.......
Attachments:
Answered by
6
hlo friend^_^
If a perpendicular cut is made from a point on the circumference of the base to the vertex and the cone is opened out, a sector of a circle with radius l is produced. Since, the circumference of the base of the cone is 2πr, therefore, the arc length of the sector of the circle is 2πr .
CSA=(Arc length of sector / Circumference of circle )×Area of circle
Curved surface area = 2πr/2πl × πl^2 = πrl
Where
l = Slant height of the cone
r = Radius of the base of the cone
To find the curved surface area of any cone, multiply the base radius of the cone by π and multiply your answer by the length of the side of the cone.
I HOPE U UNDERSTAND MY ANSWER....SO MARK ME AS THE BRAINLIEST...^_^
If a perpendicular cut is made from a point on the circumference of the base to the vertex and the cone is opened out, a sector of a circle with radius l is produced. Since, the circumference of the base of the cone is 2πr, therefore, the arc length of the sector of the circle is 2πr .
CSA=(Arc length of sector / Circumference of circle )×Area of circle
Curved surface area = 2πr/2πl × πl^2 = πrl
Where
l = Slant height of the cone
r = Radius of the base of the cone
To find the curved surface area of any cone, multiply the base radius of the cone by π and multiply your answer by the length of the side of the cone.
I HOPE U UNDERSTAND MY ANSWER....SO MARK ME AS THE BRAINLIEST...^_^
Similar questions