math

A paper cone has a base diameter of 8cm and a height of 3cm
a. Calculate the volume of the cone in term of pie
b. Calculate the curve surface area of the cone

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  1. a. v = 1/3 * pi * r^2 * h

    b. the base radius is 4 and the height is 3, so the slant height is 5 (3-4-5 triangle)

    the 5 is the radius of the circle of which the area of the cone is a segment
    ... the area of the circle is...25 pi

    the area of the cone is...4/5 * 25 pi

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  2. 1/3 *pi* r^2* h

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  3. 16cm3
    5cm

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  4. V: 16 Cm Cube
    Slant Lenght: 5

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