Atriangle 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 unit²

step-by-step explanation:

the perimeter of the triangle is the sum of its sides:

p = 7 + 6 + 9.22

p = 22.22

the circumference of a circle is 2π times the radius:

c = 2πr

22.22 = 2πr

r = 3.54

the area of a circle is π times the square of the radius:

a = πr²

a = π (3.54) ²

a = 39.3

rounded to the nearest whole number, the area of the circle is approximately 39 unit².

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft