Question

plzz solve this i want it urgently​

Answer 1

Answer:

Step-by-step explanation:

Let r be the radii of cylinder and cone ,and h be the height of cylinder and cone

C.s.ar of cylinder/ c.s.ar of cone =2πrh/πrl=8/5

=8/5=2h/l

=8/5=2h/√r^2+h^2

=16(r2+h2)=25h2 ( squaring both sides)

16r2+16h2=25h2

16r2=25h2-16h2

16r2=9h2

= r2/h2=9/16

R/h=3/4 ( hence proced