Question

Length and breath of a rectangular
paper are 22 cm and 10 cm respectively. Find
the mana of the paper.​

Answer 1

Answer:

(i) When breadth becomes the curved surface:

Height=22 cm

2πr=10

∴r=

π

5

cm

Volume =πr

2

h=π

π

2

25

22=175cm

3

(ii) When length becomes the curved surface:

Height=10 cm

2πr=22

∴r=

2

7

cm

Volume =πr

2

h=π

4

49

10=385cm

3

∴ Difference in 2 volumes =385−175=210cm

3

Answer 2

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(mana means....?)