Challenge The radius of Circle A is 4 ft. The radius of Circle B is 3 ft greater than the radius of Circle A. The radius of Circle C is 2 ft greater than the radius of Circle B. The radius of Circle D is 3 ft less than the radius of Circle C. What is the area of each circle? How many times greater than the area of Circle A is the area of Circle D?

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

How do you find the circumfrance of a circle?