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
In the figure, circle P has diameter 2 and circle Q has diameter 1. What is the area of the shaded region?
A 34π
B 34π
C 72π
D 5π
In the figure,circle P has diameter 2 and circle Q gas diameter 1. What is the area of the shaded region ?
A 3π4
B 3π
C 7π2
D 6π
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 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
If the circumference of a circle is 4m, then the ratio of circumference of the circle to the diameter of the circle is -
A 2π
B 4
C π
D 4π
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes
A Are easier to clean
B Are less prone to fouling
C Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less
D None of these
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
If the shaded region in the circle above (Previous question) has an area of π (pi) then the diameter of the circle is
A 23
B 26
C 3
D 6

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