book Maths Puzzle Numerical Ability

Compare the area of a circle with a radius of 10 units and the area of an ellipse with a major axis of 10 and a minor axis of 6. Show what equations you use to find the area od each figure and then compare each.

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book Other Question

1. determine the radius of the following cricle, then graph it identifying where its center is located. (x+2)2 + (y-6)2 = 81

2. find a and b, the foci and identify the major ax
I need lots of help in math, my teacher said im doing alegbra 1 but it is also alegbre 2. I dont understand any of it. Not the equation part nor the inequalities. Could you pleas elp me out