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3 years ago

The volume of a right circular cylinder is 1100 cm3 and the radius of its base is 5 cm. Calculate its curved surface area.

Mathematics

2 answers:

iogann1982 [59]3 years ago

5 0

Answer:

(A) 440 cm²

Step-by-step explanation:

Volume of a right circular cylinder = 1100 cm²

πr2 h = 1100 cm³

Here r = 5

(22/7) ⋅ (5)2 ⋅ h = 1100

h = 2/7

Curved surface area of cylinder = 2 πr h

= 2 ⋅ (22/7) ⋅ 5 ⋅ (2/7)

= 440 cm²

So, the curved surface area of cylinder is 440 cm²

Scorpion4ik [409]3 years ago

3 0

Answer:

Step-by-step explanation:

<u>Volume:</u>

V = πr²h

<u>Given r = 5 cm and V = 110 cm³, find h:</u>

1100 = π(5²)h
1100/25 = πh
44 = πh

<u>Curved surface area:</u>

S = 2πrh = 2*5*πh = 10*44 = 440 cm²

Correct choice is C

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