Question
a chord of radius 20cm subtends an angle of 90 degrees at centre. find the area of the corresponding major segment of the circle
Answers
Reiny
Make a sketch, drawing the right-angled triangle formed by the chord and the two radii.
Find the area of that triangle, very easy
find the area of the 1/4 of the circle, very easy
subtract those two to get the minor segment
Find the area of the whole circle and subtract the minor segment from that.
Find the area of that triangle, very easy
find the area of the 1/4 of the circle, very easy
subtract those two to get the minor segment
Find the area of the whole circle and subtract the minor segment from that.