Question

Calculate the area and volume of the ball of radius: a) r = 4 cm; b) √3 cm

Answer 1

The volume of a sphere with a radius of 4 cm would have a volume of 267.94 cm³ and a surface area of 200.96. If there of a flat 2D circle with a radius of 4 cm, it would have a area of 50.24.

Explanation:

Answer 2

4 cm radius

- Volume = 267

- Surface area = 201

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Square root 3

- Volume = 22

- Surface area = 38

Explanation:

4/3 * 3.14 * r^3 is formula. For this, I am going to use 3.14 for pi.

Since r = 4, r ^3 = 64.

Now we do 64 * 3.14 * 4/3 = ~ 267.

Now let's do the surface area.

4 * 3.14 * r^2 is the formula. For this, I am going to use 3.14 for pi.

Since r = 4, r ^ 2 = 16.

4 * 16 * 3.14 = ~ 201

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Now, let's do Square root of three.

3 square root of 3(i cubed it) * 4/3 * 3.14 = ~ 22

For surface area it is 3 * 4 * 3.14 = ~ 38.

:) This took a while xD