The diameter of a circle is 8 kilometers.
What is the circle's area?

PLEASE HELP

Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

Apolynomial function has a root of –6 with multiplicity 1, a root of –2 with multiplicity 3, a root of 0 with multiplicity 2, and a root of 4 with multiplicity 3. if the function has a positive leading coefficient and is of odd degree, which statement about the graph is true?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)