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3 years ago

A class contains 6 students with black hair, 8 with brown hair, 4 with blonde hair, and 2 with red hair.

Mathematics

1 answer:

kobusy [5.1K]3 years ago

3 0

Answer:

Step-by-step explanation:

If this class contains these types of hair color THEN the class will have

3/10 kids with black hair

1/10 kids have red hair

2/5 kids have brown hair

1/5 kids have blonde hair

_________________________

In total the class has 20 kids

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Answer:

Cube 1: 3375 cubed inches, 1350 inches squared.

Cube 2: 512 cubed inches, 384 inches squared.

Step-by-step explanation:

Formula for Volume of a Cube: $V=s^3\\$ (s - side length)

Formula for Surface Area of a Cube: $SA=6s^2$ (s- side length)

The side length's 15 inches.

Find the volume:

$V=15^3\\\rightarrow 15*15*15=3375\\\boxed {V=3375}$

The volume of cube one is 3375in³.

Find the surface area:

$SA=6(15)^2\\\rightarrow 15^2 = 225\\SA = 6 * 225\\\boxed {SA=1350}$

The surface area of cube 1 is 1350in².

The side length's 8 inches.

Find the volume:

$V=8^3\\\rightarrow 8*8*8= 512\\\boxed {V=512}$

The volume of cube two is 512in³.

Find the surface area:

$SA=6(8)^2\\\rightarrow 8^2=64\\SA=6*64\\\boxed {SA=384}$

The surface area of cube 2 is 384in².

<em>Brainilest Appreciated. </em>

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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