Question

The height of a cylinder is 3.5 cm and the volume is 110 cu cm. Find ther radius and surface area of this cylinder ?​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

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ʀᴇǫᴜɪʀᴇᴅ ᴀɴsᴡᴇʀ-:

Given that-:

Radius(r)=3.5cm

Height(h)=7.5cm

Curved Surface Area of cylinder = 2πrh

= 2×$\sf\frac{22}{7}$ × 3.5 × 7.5

Curved Surface Area of cylinder=165cm²

Total Surface Area of cylinder = 2πr (h + r)

= 2×$\sf\frac{22}{7}$ × 3.5 × (7.5 × 3.5)

Total Surface Area of cylinder =242cm²

∴ The ratio of Total Surface Area and Curved Surface Area of cylinder =242:165

=22:15

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