Question

Help as soon as possible, please.

Answer 1

• 8 units

Explanation:

Let the center of the circle be point O.

Then

• EC + EO = 13
• EC = 13 - EO

The length of EO is the side of triangle OEB.

Use Pythagorean theorem:

• EO² + EB² = OB²
• EO² + 12² = 13²
• EO² = 169 - 144
• EO² = 25
• EO = √25
• EO = 5

Find the value of EC:

• EC = 13 - 5 = 8