The lateral surface area of a hollow cylinder is 30800cm².it is cut along its height and formed a rectangular sheet of width 28 cm. find the perimeter of rectangular sheet?
Answers
Answered by
4
I think this will be helpful to you
Attachments:
Answered by
2
we have
circumference of Circle = 28cm
2πr. =. 28cm
CSA of cylinder =. 2πrh
2πrh. =. 30800 cm^2
28× h. =. 30800
h. =. 30800/ 28
h. =. 1100cm
know we now that
length of rectangular sheet = 1100 cm
width of rectangular sheet. = 28 cm
now,
perimeter of rectangular sheet=. 2(l + b)
= 2( 1100 +. 28)
= 2256 cm
circumference of Circle = 28cm
2πr. =. 28cm
CSA of cylinder =. 2πrh
2πrh. =. 30800 cm^2
28× h. =. 30800
h. =. 30800/ 28
h. =. 1100cm
know we now that
length of rectangular sheet = 1100 cm
width of rectangular sheet. = 28 cm
now,
perimeter of rectangular sheet=. 2(l + b)
= 2( 1100 +. 28)
= 2256 cm
sonidevyash:
Thank you sir
hay yaar I'm not sir.
actually koi name nahi accept ker raha tha is liye ye name likhna pada
Similar questions