Math, asked by paresh18, 1 year ago

the angle of a sector of a circle is 90 degre. the ratio of the area of the sector and that of the circle is

Answers

Answered by gurvindar59
0
1:4 is the answer.Since it is a quadrant
Answered by gaurav2013c
2
Let the radius of circle be r

Area of circle = pi r^2

Angle of sector = 90°

Area of sector = pi r^2 × 90 / 360

= pi r^2 / 4

Required ratio = Area of sector : Area of circle

= [(pi r^2) /4] / (pi r^2)

= 1/4

= 1:4
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