Find the lateral surface area of the cone generated by revol
Find the lateral surface area of the cone generated by revolving the line segment y = x/2, 0<= x <= 4, about the y-axis.
Check your answer with the geometry formula.
lateral surface area = 1/2 * base circumference * slant height
Please do no continue to copy and paste the incorrect answer. You will not get a good rating
Check your answer with the geometry formula.
lateral surface area = 1/2 * base circumference * slant height
Please do no continue to copy and paste the incorrect answer. You will not get a good rating
Solution
sy= 2 integrate[0,2] {x(1+(dx/dy)2)}dy
--> 2 integrate[0,2] {5x} dy
-->2. ((5)/2).[4 - 0]
--> 45
