SBI PO 30 April 2017 Papers

According to the question,

2r

h

=

7

5

⇒

r

h

=

7

10

Let, r = 7x metre
h = 10x metre
∴ Curved surface area = 2πrh
Volume of cylinder = πr2h
∴

2π×7x×10x

π×7x×7x×10x

=

1

7

⇒ x = 2
∴ r = 14 metre
h = 20 metre
since , Total surface area
= 2πr (r + h)
=
2 ×

22

7

× 14 (14 + 20)
= 2992 square metre