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

1. 👍 2
2. 👎 1
3. 👁 1,266
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

1. 👍 4
2. 👎 0
2. 1/3 *pi* r^2* h

1. 👍 3
2. 👎 0
3. 16cm3
5cm

1. 👍 2
2. 👎 1
4. V: 16 Cm Cube
Slant Lenght: 5

1. 👍 2
2. 👎 2

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