Quien me puede ayudar a graficar esta circunferencia según la ecuación dada:

How do i do this activity, is appreciated

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm