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Angle subtended at centre of circle by an arc, whose length and radius are equal is called

In a DC arc welding operation, the voltage-arc length characteristic was obtained as Varc = 20+5l where the arc length l was varied between 5 mm and 7 mm. Here Varc denotes the arc voltage in Volts. T

In a DC arc welding operation, the voltage-arc length characteristic was obtained as Varc = 20 + 5l where the arc length l was varied between 5 mm and 7 mm. Here Varc denotes the arc voltage in Volts.

If arc of circle of radius 30 cm has a length of 19 cm then angle subtended at center of circle is

A circle has its centre at O . A tangent drawn from a point P , which is situated outside the circle , touches the circle at A. If PA = 4 cm & PO=5 cm, then the length of the radius of the circle is (

If sector of circle of radius 16 cm has an area of 140 cm² then angle subtended at center of circle is

There are two circles of different radii. The are of a square is 784 sq cm and its side is twice the radius of the larger circle. The radius of the larger circle is seven - third that of the smaller c