45
The area of the shaded region can be gotten by multiplying the area of the circle by the subtended angle of the sector.
You do not find are of an angle however an obtuse angle mesures greater than 90 degrees.
With great difficulty because angles are degrees of measurement and not area.
The 45 degrees is an angle. To calculate an area the length and width are needed.
The area is 0.5*pi*r2 where r is the radius. The angle is totally irrelevant since it will always by 180 degrees for a semicircle!
The area of the shaded region can be gotten by multiplying the area of the circle by the subtended angle of the sector.
You do not find are of an angle however an obtuse angle mesures greater than 90 degrees.
Anything under 180 degrees
With great difficulty because angles are degrees of measurement and not area.
The area of the circle is(17,640)/(the number of degrees in the central angle of the sector)
The 45 degrees is an angle. To calculate an area the length and width are needed.
A right angle is the angle between two perpendicular lines, and, as such, has no area. You could make a right triangle from such an intersection of lines, but you need more info before you can find the area. A right angle is measured as 90 degrees or π/2 radians.
96.86 hehe ;)
if the radius of a circle is increased 100% the area is increased
A triangle with interior angles of 42, 87 and 24 degrees doesn't exist because the angles add up to 153 degrees whereas the interior angles of any triangle always add up to 180 degrees.
The area is 0.5*pi*r2 where r is the radius. The angle is totally irrelevant since it will always by 180 degrees for a semicircle!
A sector is the area enclosed by two radii of a circle and their intercepted arc, and the angle that is formed by these radii, is called a central angle. A central angle is measured by its intercepted arc. It has the same number of degrees as the arc it intercepts. For example, a central angle which is a right angle intercepts a 90 degrees arc; a 30 degrees central angle intercepts a 30 degrees arc, and a central angle which is a straight angle intercepts a semicircle of 180 degrees. Whereas, an inscribed angle is an angle whose vertex is on the circle and whose sides are chords. An inscribed angle is also measured by its intercepted arc. But, it has one half of the number of degrees of the arc it intercepts. For example, an inscribed angle which is a right angle intercepts a 180 degrees arc. So, we can say that an angle inscribed in a semicircle is a right angle; a 30 degrees inscribed angle intercepts a 60 degrees arc. In the same or congruent circles, congruent inscribed angles have congruent intercepted arcs.