geometry
What is the area of a sector with a central angle of 210 degrees and a diameter of 4.6 m?
asked by
ken

Radius = 4.6/2 = 2.3
Area = pi*(2.3)^2*(210/360)posted by plumpycat

If your quesions refers to circle then:
Area of a circle:
A = r ^ 2 * π
210 ° / 360 ° = 2 * 3 * 5 * 7 / 2 ^ 3 * 3 ^ 2 * 5 =
7 / 2 ^ 2 * 3 =
7 / 4 * 3 = 7 / 12
A(210°) = r ^ 2 ∙ π * 7 / 12
A(210°) = 7 * r ^ 2 ∙ π / 12
posted by Bosnian

r = d / 2
r = 4.6 / 2
r = 2.3 m
r ^ 2 = 2.3 ^ 2
r ^ 2 = 5.29
A(210°) = 7 * r ^ 2 ∙ π / 12
A(210°) = 7 * 5.29 ∙ π / 12
A(210°) = 37.03 ∙ π / 12
posted by Bosnian
Respond to this Question
Similar Questions

geometry
What is the area of a sector where n= the measure of the central angle, r=radius, and d=diameter. n=90 degrees, d=18cm 
math
a circular pizza box logo has a sector with a central angle of 80 degrees and a diameter of 16 inches. Find the area of this sector 
geometry
Find the area of a sector with a central angle of 190° and a diameter of 5.1 cm. Round to the nearest tenth. Please Help I just don't get it 
math
Find the volume of the cone to be constructed from a sector having a diameter of 72 cm and a central angle of 210 
geometry
1.what is the area of a sector with a central angle of 160 degrees and a diameter of 5.8m? round the answer to the nearest tenth A. 8.1 m^2 B.4.0 m^2 C.47.0 m^2 D.11.7 m^2 2.what is the area of a regular octagon with a side of 8 
sector and diameter
Find the area of a sectorwith a central angle 0f 190degree and a diameter of 5.1cm. Can someone please help? 
Geometry
The circumference of a circle is 20 pi cm. Find diameter, radius, and area of the disk, the length of an arc of 90 angle and area of a 90 angle sector. Answer in terms of pi. d= ___ r= _____, disk area= _______ arc length =______, 
trig
a. A sector that has been cut out of circular plastic sheet which has a circumference of 12.31 m. If the central angle of the sector is 1/4 of a revolution, find the area of the sector. 
geometry
In a arcade game, the "monster" is the shaded sector of a circle of radius 1 cm, as shown in the figure. The missing piece (the mouth) has a central angle of 60 degrees. What is the area of the monster in cm^2 
GEOMETRY
In a arcade game, the "monster" is the shaded sector of a circle of radius 3 cm, as shown in the figure. The missing piece (the mouth) has a central angle of 60 degrees. What is the area of the monster in cm^2