What is the surface area of a sphere with radius $r = 3 cm$ ?

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A circle in the xy-plane has equation $(x - 3)^{2} + (y + 2)^{2} = 25$ . What are the coordinates of its center and its radius?
In right triangle $A B C$ , angle $C = 9 0^{\circ}$ . If $sin A = \frac{3}{5}$ , what is the value of $cos A$ ?
What is the area of an equilateral triangle with side length $8 cm$ ?
A cylinder has a radius of $3 cm$ and a height of $10 cm$ . What is its total volume?
What is the median of the dataset ${4, 8, 12, 15, 19, 22, 27}$ ?
Two similar triangles have corresponding side lengths in the ratio $2 : 5$ . If the smaller triangle has an area of $24 cm^{2}$ , what is…