Related Questions

The radius of circle A is r, and the radius of circle B is 3/4r. What is the ratio of the area of circle A to the area of circle B?
A 16 to 9
B 9 to 16
C 1 to 4
D 4 to 3
The area of circle A is 6.25 sq. in. If radius of the circle is doubled, what is the new area of circle A in sq. in?
A 5 pi
B 12.5 pi
C 25 pi
D 39.0625 pi
In the picture area of the square ABCD is 196 square miles.O is the center of the circle of the circle.What will be the area of the circle in square miles ?
A 100π
B 49π
C 144π
D 64π
Radius of circle center 0 is 3 times the radius of circle center C. Angle ACB -A angle POQ. If the shaded are of circle C is 2 then what is the area of then shaded part of circleO?
A 36
B 9
C 12
D 18
The circumference of the circle and teh perimeter of the square is equal and the ratio between the diameter of the circle and the side of the square is 7 :11 . What is the area of the circle ?
A 154 cm2
B 160 cm2
C 132 cm2
D Can't be determined
The ratio of the area of area of a circle to the radius of the radius of the circle is--
A π
B 2π
C π2
D none of these
The sum of the circumference of a circle and the perimeter of a rectangle is 130 cm. The area of the rectangle is 104 cm2 and the length of the rectangle is 13 cm. What is the area of the circle ?
A 516 cm2
B 616 cm2
C 816 cm2
D 216 cm2
If the ratio of the area of a sector to the area of the circle is 3 : 5, what is the ratio of the length of the are in the sector to the circumference of the circle?
A 35
B 27
C 13
D 12
If the ratio of the area of a sector to the area of the circle is 3:5. What is the ratio of the legth of theare in the sector to the circumference of the circle?
A 3/5
B 2/7
C 1/3
D 1/2
If the ratio of the area of a sector to the area of the circle is 3: 5, What is the ratio of the length of the arc in the sector to the circumference of the circle?
A 3/5
B 2/7
C 1/3
D 1/2

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