Answers

2016-02-17T15:28:44+05:30
(25-x)^2 = 625 - 50x + x^2

(25-x)^2 + y^2 = 20^2
625 - 50x + x^2 + y^2 = 400
y^2 + x^2 - 50x = 400 - 625
y^2 + x^2 - 50x = -225
y^2 + x^2 -50x + 225 = 0
we can solve upto this because there is not given any relation about x & y
0
A right triangle having sides 15 cm and 20 cm is made to revolve about its
hypotenuse. Find the Volume and Surface Area of the double cone so formed.this is the actual question. im sorry but i didnt get how to find the height and base of the bottom cone.