Circumference & Area
How are the radius and diameter related to each other?
The radius is half of the diameter OR the diameter is 2 times the radius.
MS. FABERMAN'S PROBLEM
Two angles add up to 90º. What are they called?
Complementary Angles
Solve for x: 2x+3=11
x=4
True or false: -3<-4
False
A circular track has a radius of 12 meters. How far do you run if you go around once?
75.36 meters
At noon, the temperature is 10ºF. It drops 18 degrees by midnight. What is the temperature at midnight?
-8ºF
An angle measure 65º. If this angle is part of complementary angles, what must the other angle measure?
25º
MS. FABERMAN'S PROBLEM
Solve: x+4<10
x<6
A circular pond has a radius of 6 feet. How much ground does the pond cover?
113.04 square feet
A diver is searching for the Titanic. He goes 400 feet below sea level. What is his elevation?
-400
70º
Solve for x: -3x+7=1
x=2
Solve: 2x-1>5
x>3
A pizza has a radius of 5 inches. How much space is covered with cheese?
78.5 square inches
What is the answer to 13+(-4)?
9
Two angles are complementary angles. One angle measures 30º. The other angle measures 2xº. What is x?
30º
Solve for x: 4x-9=3
x=3
Solve: -3x+2<9
x>-3
The distance around a circle is 31.4 cm. What is the diameter of the circle?
10 cm
What is the answer to 15-(-16)?
31
Two angles are across from each other, have the same measure, and are formed by two intersecting lines. What are they called?
Vertical Angles
Solve for x: 6x+5=-7
x=-2
x<2