Caroline paddled her kayaked 4km across a circular lake, what is the area of the lake?
Approximately: 12.56km squared
100
What is a formulas for pie?
p= c/d
200
What do we call the area or portion of a circle?
What is a sector.
200
What is the area of a circle if the circumference is 39m?
121.15m
200
If Ben has a pizza with an area of 103cm squared and each piece has a central angle of 45 degrease, what would be the area of each piece?
12.875cm squared
200
What is the formula for the area?
a = p • r²
300
What is a chord?
It's a intersecting line that connects the circle in two different places
300
What's the area of a circle with a 5cm diameter?
19.63cm
300
Ashley is cutting a semicircular window out of a circle of glass to put into her house, what is the area of the semicircle if the whole circle is 205cm squared?
102.5cm squared
300
What are two different formulas for the circumference?
c = pie • d
and
c = 2 • pie • r
400
The boundary of a closed circular figure is none as?
What is the circumference.
400
What's the area of a circle with a 37m circumference?
108.99m
400
If Julie is making a circular pool in her backyard with the diameter 2m, what is the area of Julie's pool?
Approximately: 3.14m squared
400
What are two formulas for the central angle?
Central angle/360 = Arc length/Circumference
and
Central angle/360 = Area of sector/Area of disk
500
The central angle is also known as..?
What is the theta.
500
If the area of the disk is 89cm squared and the central angle 114° what is the area of the sector?
28.18cm
500
If George has a table with the radius the diameter of 1m, how big of an area will the table have?
0.78539.... or Approximatively: 1m squared
500
What is the formulas for the radius in which you need the area?