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What is the sector area of a circle that has a radius of 8 cm and has a subtended angle of 50 degrees at the circle's centre?
Wiki User
∙ 7y ago
Area of the sector: 50/360 times pi times 8 squared = 27.925 square cm to 3 dp
Wiki User
∙ 7y ago
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The sum of the measures of the angles is 180 degrees?
The question probably refers to the internal angles of a triangle which total 180° . Also, the angle at the centre of a circle and subtended by half the circle is 180°.
What is the value of the degree of an angle in a semi-circle?
An angle subtended at the semicircular arc is 90 degrees.
How many degrees are in circles?
There is 360 degrees in a circle.
How do you find radius when arc length is given?
Let us recall the formula for the circumference of a circle. That one is 2pi r. r is the radius of the circle and 2pi is the angle in radian measure subtended by the entire circle at the centre. If this is so, then any arc length 'l' will be equal to the product of the angle in radian measure subtended by the arc at the centre and the radius.So l = theta r. Say theta is the angle subtended by the arc at the centre.Therefrom, r = l / Theta.
What is a circle called if it measures 180 degrees?
How can a circle measure 180 degrees? Circles don't have any angles!
What is the angle subtended by the circumference of a circle at its centre?
It is 360 degrees because angles around a point add up to 360 degrees
Why is an inscribed angle that intercepts a semi-circle a right angle?
It is the consequence of one of the circle theorems and in some books, it is considered a theorem itself. The underlying proposition is that the angle subtended at the circumference of the circle by any arc of a circle is half the angle subtended at the centre. In the case of a semicircle, the arc is the half circle and the angle at the centre is the one that the diameter makes at the centre of the circle ie 180 degrees. So the angle at the circumference is half that ie 90 degrees.
The sum of the measures of the angles is 180 degrees?
The question probably refers to the internal angles of a triangle which total 180° . Also, the angle at the centre of a circle and subtended by half the circle is 180°.
How do you draw an angle 110 degree using ruler and compass?
Construct a circle and divide the circumference into 36 equal arcs Each arc will represent 10 degrees and 11 of them subtended to the circle's centre will create an obtuse angle of 110 degrees
What is the value of the degree of an angle in a semi-circle?
An angle subtended at the semicircular arc is 90 degrees.
How many degrees are in circles?
There is 360 degrees in a circle.
How do you find radius when arc length is given?
Let us recall the formula for the circumference of a circle. That one is 2pi r. r is the radius of the circle and 2pi is the angle in radian measure subtended by the entire circle at the centre. If this is so, then any arc length 'l' will be equal to the product of the angle in radian measure subtended by the arc at the centre and the radius.So l = theta r. Say theta is the angle subtended by the arc at the centre.Therefrom, r = l / Theta.
Find the length of arc subtended by a central angle of 30 degrees in a circle of radius of 10 cm?
5.23
Is concentric circle and congruent circle are they same?
No. Concentric circles have the same centre but not [usually] the same radius. Congruent circles have the same radius, but not [usually] the same centre. If you have two concentric congruent circles one will be exactly on top of the other.
What is the name for 90 degrees in the circle?
If an arc of a circle is drawn so that the length of the arc is equal to the radius of the circle then the angle at the centre of the circle subtended by the arc is called one radian.Then the angle subtended by the entire circle is given by the ratio , circumference / radius = 2πr/r = 2π radians.2π radians is equivalent to 360°So, π radians = 180°and thus, π/2 radians = 90°Pi over two, or Pi divided by two radians is the name for 90° in a circle.
What is a circle called if it measures 180 degrees?
How can a circle measure 180 degrees? Circles don't have any angles!
If two circles have the same point then what are they called?
If you mean they both have the same centre - they're called 'concentric' circles.
