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### Question 1: Tentukan panjang sisi AB pada tiap bangun berikut (Find the length of side AB in the following shapes)

#### a) For the first shape (right triangle):
- Sides: AC = 6 cm (base), BC = 15 cm (hypotenuse), height from C to AB = 10 cm
- Use the Pythagorean theorem to find AB.
\[
AB^2 = AC^2 + BC^2 = 6^2 + 10^2 = 36 + 100 = 136
\]
\[
AB = \sqrt{136} \approx 11.66 \, \text{cm}
\]

#### b) For the second shape (triangle):
- Given: AE = 12 cm (height), AB = 20 cm (hypotenuse), BE = 12 cm (vertical height), CE = 15 cm
- Again using the Pythagorean theorem, solve for AB.
\[
AB = \sqrt{AE^2 + BE^2} \]
 which gives

Tentukan panjang sisi AB pada tiap bangun berikut (Find the length of side AB), Tentukan luas tiap bangun berikut (Find the area of the shapes), Kelompok bilangan manakah yang merupakan ukuran segitiga siku-siku? (Which group of numbers represents a right triangle?)

Learn how to solve geometry problems involving the Pythagorean theorem to find the length of sides and area calculations for trapezoids and rhombuses. Perfect for middle school students in Grades 6-8.

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