BIG POINTS PLS HELP - MATH What are the center and radius of the circle defined by the equation

x^2 + y^2 - 6x + 4y +4 =0

A. Center (-3,2); radius 3

B. Center (3,-2); radius 9

C. Center (3,-2); radius 3

D. Center (-3,2); radius 9

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?