Surface Area of Cone

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Question 1

A cone has:

  • Two circular faces

  • One rectangular face

  • Two vertices

  • One circular base and one vertex

Question 2

A cone whose axis is perpendicular to the base is called:

  • Oblique cone

  • Hollow cone

  • Right circular cone

  • Solid cone

Question 3

The slant height (l) of a right circular cone is related to radius (r) and height (h) by:

  • l = r + h

  • l = r - h

  • l² = r² − h²

  • l² = r² + h²

Question 4

The curved surface area (CSA) of a cone is:

  • πr²

  • 2πr

  • 2πrh

  • πrl

Question 5

If radius = 7 cm and slant height = 10 cm, the curved surface area is:

  • 140π cm²

  • 70π cm²

  • 490π cm²

  • 240π cm²

Question 6

If the height of a right circular cone is 12 cm and radius is 5 cm, the slant height is:

  • 11 cm

  • 12 cm

  • 13 cm

  • 14 cm

Question 7

The total surface area (TSA) of a cone is:

  • πr²

  • πrl

  • π(r + l)

  • πr(r + l)

Question 8

If radius = 3 cm and slant height = 5 cm, the total surface area is:

  • 15π cm²

  • 24π cm²

  • 18π cm²

  • 25π cm²

There are 8 questions to complete.

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