For any triangle, the sum of the measure of three angles equals 180 degrees. two angles have the same measure, a, and the third angle measures 45 degrees. which of the following equations could be used to determined to measure a?

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

the answer is c

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