Math  /  Geometry

QuestionUse the image to V=512 m3V=1728 m3V=512 \mathrm{~m}^{3} \quad V=1728 \mathrm{~m}^{3}
The two cubes are similar in shape. Compare the volume of the two and determine the scale factor from the smaller cube to the larger cube. En fraction. (1 point) \square Check answer Remaining Attempts : 3

Studdy Solution

STEP 1

What is this asking? We've got two cubes, one small and one big, and we know their volumes.
We need to figure out how much bigger the large cube is compared to the small one, and express this as a fraction. Watch out! Don't mix up the order – we want the scale factor *from* the smaller *to* the larger cube.

STEP 2

1. Find the side lengths.
2. Calculate the scale factor.

STEP 3

Alright, let's **start** with the **smaller cube**.
We know its **volume** is 512 m3512 \text{ m}^3.
The **volume of a cube** is side length cubed, so we can write this as s3=512s^3 = 512, where ss is the side length.

STEP 4

To find ss, we need to take the **cube root** of both sides!
So, s=5123s = \sqrt[3]{512}.
What number multiplied by itself three times gives us 512?
It's **8**!
So, the **side length** of the **smaller cube** is 88 m.

STEP 5

Now, let's tackle the **larger cube**.
Its **volume** is 1728 m31728 \text{ m}^3.
Using the same **volume formula**, we have S3=1728S^3 = 1728, where SS is the side length of the **larger cube**.

STEP 6

Taking the **cube root** of both sides gives us S=17283S = \sqrt[3]{1728}.
And the **cube root** of 1728 is **12**!
So, the **side length** of the **larger cube** is 1212 m.

STEP 7

The **scale factor** is the ratio of corresponding lengths in similar figures.
We want the scale factor *from* the smaller cube *to* the larger cube.
This means we divide the **larger cube's side length** by the **smaller cube's side length**.

STEP 8

So, the **scale factor** is 128\frac{12}{8}.
We can **simplify** this fraction by dividing both the **numerator** and the **denominator** by their **greatest common factor**, which is 4.

STEP 9

Dividing 12 by 4 gives us 3, and dividing 8 by 4 gives us 2.
So, the **simplified scale factor** is 32\frac{3}{2}.

STEP 10

The scale factor from the smaller cube to the larger cube is 32\frac{3}{2}.

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