*PL HELP* A triangle has sides that measure 7 units, 6 units, and 9.22 units. What is the area of a circle with a circumference that equals the perimeter of the triangle? Use 3.14 for π, and round your answer to the nearest whole number.

22 units2
157 units2
39 units2
70 units2

39 untits 2

Step-by-step explanation:

Hi, to answer this question, first we have to calculate the perimeter (sum of sides) of the triangle:

Perimeter: 7+6+9.22 = 22.22 units

Then we have to apply the circumference (C) formula:

C = π x diameter

Since C = perimeter of the triangle:

22.22 = 3.14 d

22.22 /3.14 =d

7.08 = d

Finally, we apply the next formula:

Area of a circle = π (d/2)^2

Replacing:

A = 3.14 (7.08/2)^2 = 39.30 units2 = 39 units 2

a) t'(-3, 6) and v'(0, 3)  

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