A circle with radius of 9   cm 9cmstart color #1fab54, 9, start text, c, m, end text, end color #1fab54 sits inside a circle with radius of 11   cm 11cmstart color #11accd, 11, start text, c, m, end text, end color #11accd. What is the area of the shaded region? Round your final answer to the nearest hundredth.

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

We just started the introduction into circles and i have no idea how to do this.

In the diagram below, abc is congruent to dec what is the value of x