Question

A chord of a circle of radius 10cm subtends a right angle at the centre .Find the area of the corresponding minor sector, major sector, minor segment and major segment​

Answer 1

given= radius 10cm subtends a right angle at the centre.

step by step explanation :-

Let AB be the chord of the circle subtending 90° angle at centre O of the circle.

Area of major sector OADB =3/4 x 3.14 x 10 x 10=235.5cm2 .

Area of minor sector OACB = =1/4 x 3.14 x 10 x 10= 78.5cm2.

Area of trangle OAB = =50 cm2Area of minor segment ACB = Area of minor sector OACB - Area of ΔOAB = 78.5 - 50 = 28.5 cm2