Question

22. A rectangular sheet of paper 22 cm long and 12 cm
broad can be formed into the curved surface of a
cylinder in two ways. Find the difference between the
volumes of the two cylinders which can be formed.​

Answer 1

Answer:

210cm^3

Step-by-step explanation:

length of the sheet = 22cm

breath =12cm

if it is folded length wire, then

circumference of so formed cylinder =22cm

therefore radius =C/ 22÷7=7/2cm

and height =12cm

volume =22/7r^2h

=462cm^2

if it is folded length wire then

circumference =12cm

radius =12/2×22/7=2/11cm

h=22cm

volume = 22/7r^2h

=252cm^3

difference volume =462-252=210cm^3

Answer 2

Answer:

210cm^3

Step-by-step explanation:

length of the sheet = 22cm

breath =12cm

if it is folded length wire, then

circumference of so formed cylinder =22cm

therefore radius =C/ 22÷7=7/2cm

and height =12cm

volume =22/7r^2h

=462cm^2

if it is folded length wire then

circumference =12cm

radius =12/2×22/7=2/11cm

h=22cm

volume = 22/7r^2h

=252cm^3

difference volume =462-252=210cm^3