Radii of two cylinders are in the ratio 2:3 and their heights are in the ratio
5:4. Find ratio of their curved surface areas.
plz give answer my exam is coming and wish me All the best for my exams
Answers
Answered by
1
refer to the attachment above !!!
All the best for your exams !!!!!
Attachments:
Anonymous:
10th
you like deathnote?
if,then i like too
why we talk here ?
why not in message ??
cze i had not completed 1000 answers
which skul?
cвrídgє
nyc
light ur exams are over or not?
Answered by
3
Answer :-
Let ,
the radii of the cylinders be 2x and 3x respectively.
And let their heights be 5y and 3y respectively.
CSA of 1st cylinder
=2πrh=2π×2x×5y
CSA of 2nd cylinder
=2πRH=2π×3x×3y
∴Ratio of CSA of the 2 cylinders
=2π×2x×5y÷2π×3x×3y
=10xy÷9xy
=10/9
Volume of 1st cylinder
= πr²h=π×4x²×5y
Volume of 2nd cylinder
= πR²H=π×9x²×3y
∴Ratio of the volume of the 2 cylinders
=π×4x²×5y÷π×9x²×3y
=4×5÷9×3=20÷27=20/27
Let ,
the radii of the cylinders be 2x and 3x respectively.
And let their heights be 5y and 3y respectively.
CSA of 1st cylinder
=2πrh=2π×2x×5y
CSA of 2nd cylinder
=2πRH=2π×3x×3y
∴Ratio of CSA of the 2 cylinders
=2π×2x×5y÷2π×3x×3y
=10xy÷9xy
=10/9
Volume of 1st cylinder
= πr²h=π×4x²×5y
Volume of 2nd cylinder
= πR²H=π×9x²×3y
∴Ratio of the volume of the 2 cylinders
=π×4x²×5y÷π×9x²×3y
=4×5÷9×3=20÷27=20/27
thans
hey , its 5:4 not 5:3 dude !
ok
sorry
was just letting u know !
so correct it , if u like :-/
okk
nice answer !
thαnkѕ
Similar questions