Question

The base radius and height of a right circular cylinder are 5 cm and 10 cm respectively. It's curved surface area is

1) 100π cm²

2) 100 cm²

3) 110 cm²
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4) 110π cm²​

Answer 1

Answer:

100pi

Step-by-step explanation:

given

radius=5cm

height=10cm

csa=2 pirh

2×pi×5 ×10

100pi

Answer 2

★Given:

• Base radius of a cylinder = 5cm
• Height of a cylinder = 10cm

★To find:

• Its curved surface area

★Solution:

We know,

✦CSA of cylinder = 2πrh

Putting values in the formula,

⇒ CSA = 2πrh

            =2π(5)(10)

            =2π(50)

            =100π cm².

Hence, option(A) is correct.

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Know more:-

Important curved surface area formula's:

• Cuboid - 2h(l+b)
• Cube    - 4a²
• Cylinder - 2πrh
• Cone    - πrl
• Sphere - 4πr²
• Hemisphere - 2πr²

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