If AABC is an equilateral triangle, then the mLA = 60°.
Choose the equivalent statement.
A. If AABC is not an equilateral triangle, then the m _A does not
equal 60°
B. If the m A does not equal 60°, then AABC is not an equilateral
triangle
C. If the m A = 60°, then AABC is an equilateral triangle.

If AABC is an equilateral triangle,

then the mLA = 60°.
Choose the equivalent statement.
A. If AA

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Ответ:

franciscovazquez623

01.02.2023

Mathematics

A ≈ 35.3 units²

Step-by-step explanation:

Calculate the radius CB using Pythagoras' identity in the right triangle.

CB² + AB² = AC²

CB² + 6² = 9²

CB² + 36 = 81 ( subtract 36 from both sides )

CB² = 45 = r²

Then area of quarter circle is

A = $\frac{1}{4}$ × πr² = $\frac{1}{4}$ × π × 45 ≈ 35.3

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