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lyudmila [28]
2 years ago
10

ABC and ACD are both right angled triangles. a) explain why the length of AC is 13cm.​

Mathematics
1 answer:
timofeeve [1]2 years ago
6 0

Answer:

In the picture attached, the question is shown.

a) Applying Pythagorean theorem to triangle ABC, and solving for AC:

CB² + BA² = AC²

5² + 12² = AC²

√169 = AC

13 cm = AC

b) Applying Pythagorean theorem to triangle ACD, and solving for AD:

CD² + AC² = AD²

5² + 13² = AD²

√194 = AD

13.9 cm = AD

Step-by-step explanation:

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