What is the circumference of this circle in centimeters use 22/7 for radius

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

Can some one explain this i got sent this. is this a threat i’m scared

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square