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I can help solve these problems by providing step-by-step explanations. Here's a breakdown of the questions from the image you've uploaded:

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**1. Kubus ABCD.EFGH dengan panjang rusuk 12 cm. Hitunglah jarak antara titik A dan titik E!**

This is a problem of calculating the diagonal in a cube from vertex A to vertex E (opposite corners). The formula to calculate the space diagonal \( d \) of a cube with edge length \( s \) is:

\[
d = s\sqrt{3}
\]

Given:
\[
s = 12 \text{ cm}
\]

So:
\[
d = 12\sqrt{3} \text{ cm}
\]

This is the distance between points A and E.

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**2. Balok ABCD.EFGH memiliki panjang 16 cm, lebar 12 cm, dan tinggi 8 cm. Tentukan jarak antara titik B dan titik H!**

This involves calculating the space diagonal of a rectangular prism. The formula for the space diagonal \( d \) is:

\[
d = \sqrt{p^2 + l^2 + t^2}
\]

Where:
- \( p \) is the length = 16 cm
- \( l \) is the width = 12 cm
- \( t \) is the height = 8 cm

Substituting values:

\[
d = \sqrt{16^2 + 12^2 + 8^2} = \sqrt{256 + 144 + 64} = \sqrt{464} \approx 21.54 \text{ cm}
\]

Thus, the distance between points B and H is approximately 21.54 cm.

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**3. Limas T.ABCD memiliki alas segitiga siku-siku dengan AB = 12 cm, BC = 10 cm, dan TA tegak lurus bidang ABCD. Jika TA = 8 cm, hitunglah jarak antara titik T dan titik tengah rusuk AC!**

This problem involves finding the distance from the apex of the pyramid \( T \) to the midpoint of edge \( AC \). To solve this:
1. Calculate the midpoint of \( AC \), using the Pythagorean theorem since \( \triangle ABC \) is a right triangle.
2. Use 3D distance formula, including the height \( TA = 8 \) cm.

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**4. Prisma segitiga ABC.DEF memiliki sisi alas segitiga yang sama dengan panjang sisi 12 cm, tinggi prisma 20 cm. Hitung jarak antara titik A dan titik tengah rusuk EF!**

To solve this, you need to compute the 3D distance between points on a triangular prism by applying the distance formula in space. Since the height is 20 cm, the steps will involve using both horizontal and vertical distances.

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**5. Dalam kubus ABCD.EFGH dengan panjang rusuk 10 cm, terdapat kubus lebih kecil yang memiliki titik-titik sudut pada tengah rusuk-rusuk kubus besar. Hitunglah jarak antara titik A dan titik P!**

This is a case of finding the distance between points in two concentric cubes. We'll calculate the coordinates of point \( P \) based on the smaller cube's placement and then use the 3D distance formula.

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If you'd like me to solve one of these problems in detail or clarify any step, let me know! I can also work on the remaining questions. 

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**Related Questions:**

1. What is the formula for calculating a diagonal in a rectangular prism?
2. How can the Pythagorean theorem be applied to find a distance in 3D space?
3. How is the concept of midpoint useful in solving geometric problems in 3D?
4. What is the difference between a cube's space diagonal and its face diagonal?
5. How do you approach problems involving triangular prisms in geometry?

**Tip:** Always start by identifying key geometric elements such as edges, diagonals, and centers before applying the distance formulas.

Kisi-Kisi PHB Matematika: Hitung jarak antara titik A dan B di kubus, balok, limas, dan prisma segitiga.

Learn how to calculate distances and diagonals in 3D shapes such as cubes, rectangular prisms, and triangular prisms using the Pythagorean Theorem. The problems involve space diagonals, base areas, and vertex distances. Suitable for high school students.

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