Areas of Circles
What is the area of a circle with radius 6m?
113.04 m2 or 36pi
what is the circumference of a circle with diameter 11m?
34.54m or 11pi
what is the area of a sector in a circle with radius 12m and central angle 30 degrees?
37.68 m2 or 12pi
what is the arc length of a circle with diameter 92m and a central angle of 35 degrees?
28.0855 m or 8.94pi
What is circumference?
What is the area of a circle with radius 1.5m?
7.065 m2 or 2.5pi
what is the circumference of a circle with diameter 100.6m?
316.04m or 100.6pi
what is the area of a sector in a circle with radius 3m and central angle 45 degrees?
3.5325 m2 or 9/8pi or 1.13pi
what is the arc length of a circle with diameter 29m and a central angle of 160 degrees?
40.49 m or 116/9pi or 12.89pi
What is radius?
A straight line from the center of the circle to the circumference.
what is the area of a circle with diameter 11m?
95.03 m2 or 30.25pi or 121/4pi
what is the circumference of a circle with radius 16m?
100.53 m or 32pi
what is the area of a sector in a circle with diameter 11 and central angle 20 degrees?
5.2769 m2 or 121/72pi or 1.68pi
what is the arc length of a circle with radius 43m and a central angle of 14 degrees?
10.5 m or 301/90pi or 3.34pi
What is the formula for diameter?
d = 2r
What is the area of a circle with diameter 2.5m?
4.9 m2 or 1.56pi or 25/16pi
what is the circumference of a circle with radius 12.15m?
76.34m or 24.3pi
DAILY DOUBLE!!!!! what is the area of a sector in a circle with diameter = 50m and central angle = 120 degrees?
654.1667 m2 or 625/3pi or 208.3pi
what is the arc length of a circle with radius 39m and a central angle of 100 degrees?
68.07 m or 65/3pi or 21.67pi
A region bounded by 2 radii and an arc is called what?
Sector of a circle or area of a sector
If the area of a circle is 115 m2 what is the radius of the circle?
6.05m
The circumference of a circle 105m. What is the diameter?
33.439m
The area of a circle is 55 m2. The area of a sector in the circle is 13.75 m2. What is the measure of the central angle in degrees?
90 degrees
If the arc length of a circle 12m and the circumference of that circle 72m what is the measure of the central angle in degrees?
60 degrees
The length of the arc depends on what two things?
1) The measure of the arc.
2) The size of the circle.