the diameter of rectangular sheet of paper is 22cm×14cm. It is rolled once across the breadth and once across the length to form a right corner cylinder of biggest possible surface area. Find the difference in volumes of two cylinder that will be formed.
Answers
Answered by
2
Step-by-step explanation:
For Right Circular cylinder 1, we have
height h=12
circumference of circular part =22
i.e 2πr=22
∴r=
22
11(7)
∴r=
2
7
Volume v1=πr
2
h
∴v1=
7
22
(
2
7
×
2
7
)×12
∴v1=462 c.c
For Right Circular cylinder 2, we have
height h=22
circumference of circular part =12
i.e 2πr=12
∴r=
22
6(7)
∴r=
11
21
Volume v2=πr
2
h
∴v2=
7
22
(
11
21
×
11
21
)×22
∴v2=252 c.c
Difference in volumes:
v1−v2=462−252
=210 c.c
Answered by
3
Answer:
539cm^3
Step-by-step explanation:
HEY...
HERE
1.HEIGHT= 14 cm
...when rectangular paper is rolled LENGTH becomes CIRCUMFERENCE OF CIRCLE.
2.LENGTH = 22
Attachments:
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