Calculate the area enclosed by the curve x^2 + y^2 - 10x + 4y - 196 = 0.
Problem
Calculate the area enclosed by the curve $x^2 + y^2 - 10x + 4y - 196 = 0$.
| A. 15π | C. 169π |
| B. 13π | D. 225π |
Radius of Circle
What is the radius of the circle x^2 + y^2 - 6x = 0?
Problem
What is the radius of the circle $x^2 + y^2 - 6x = 0$?
| A. 6 | C. 4 |
| B. 9 | D. 3 |
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Radius of Circle of New Atom Smasher
Problem
A new kind of atom smasher is to be composed of two tangents and a circular arc which is concave toward the point of intersection of the two tangents. Each tangent and the arc of the circle is 1 mile long, what is the radius of the circle? Use 1 mile = 5280 ft.
| A. 1437 ft. | C. 1347 ft. |
| B. 1734 ft. | D. 1374 ft. |
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