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The height of a cone is 21cm. Find the a...

The height of a cone is 21cm. Find the area of the base if the slant height is 28cm.

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Knowledge Check

  • Find the area of a triangle with base = 18 cm and height = 12 cm.

    A
    128 sq. cm
    B
    110 sq. cm
    C
    108 sq. cm
    D
    109 sq. cm
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