Circle P has a radius of 8 units with center P at (2, 1). Which equation defines circle P?

Question

chaise · Answer

sqrt(8)=(x-2)^2+(y-1)^2

I hope this is right!

amistre64 · Answer

almost

amistre64 · Answer

r^2 = x^2 + y^2  is the basic set up; then modified for central positions

chaise · Answer

sqrt(8)^2=(x-2)^2+(y-1)^2

Is that better :s?

amistre64 · Answer

nope, your hanging onto that sqrt, its bad baggage to begin with

amistre64 · Answer

r=8; therefore r^2 = 8^2

chaise · Answer

Tell me how you would go about it then. Sorry for any confusion.

anonymous · Answer

A cone with a radius of 16 feet and a slant height of 27 feet ?What is the surface area of this cone? Use 22/7  for pi.

anonymous · Answer

Bridget has a kitchen canister, in the shape of a cylinder, which holds flour. If the canister is 22 centimeters wide and 24 centimeters tall, what is its approximate surface area in terms of pi?

anonymous · Answer

If a tennis ball has a diameter of approximately 6.7 centimeters, what is its surface area?

amistre64 · Answer

you really should post new questions to a new post; otherwise it just gets buried in the pile