Circles, Cylinders & Coordinate Plane

Question 1

Area of Circle =

Answer 1

Pi(r)^2

Question 2

Circumference of Circle =

Answer 2

Pi(D)

Question 3

A central angles point lies where on the circle?

Answer 3

Center

Question 4

An inscribed angles point lies where on the circle?

Answer 4

On the circle

Question 5

Angle rule for central vs. inscribed angles

Answer 5

An inscribed angle = (1/2) of the arc it intercepts

Question 6

If a circle has an inscribed triangle and once of the triangles legs is the diameter, then what do we know about the triangle?

Answer 6

It is a right triangle

Question 7

Surface Area of Cylinder formula

Answer 7

= 2 Circles + Rectangle
= (2 Pi(r)^2) + CircumferenceHeight
= (2 Pi(r)^2) + 2(Pi)rH

Question 8

Volume of a Cylinder

Answer 8

= Pi(r)^2*(h)

Question 9

Y = Mx + b is the equation of?

Answer 9

a line on a plane
M is the slope
B is the y intercept

Question 10

What is the relationship of M of 2 perpendicular lines?

Answer 10

The M is the negative reciprocal of the other

Question 11

What is the equation of the line that runs through the points (4,5) and (-2,6).

What is the process to solve?

Answer 11

1. Find slope = difference between x and y to create (Rise/Run).
2. Plug one of the coordinates into the equation to solve for B
3. Write the equation in the format Y = Mx + B

Question 12

Where are the 4 different sections of the coordinate plane and where are they located?

Answer 12

I (top right)
II (top left)
III (bottom left)
IV (bottom right)