Related Questions

If the radius of a circle is decreased by 30 percent, by what percent will the area of the circular region decrease?
ক 15%
খ 49%
গ 51%
ঘ 60%
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?
ক 16 to 9
খ 9 to 16
গ 1 to 4
ঘ 4 to 3
If the radius of a circle is decreased by 20% then the area is decreased by:
ক 20%
খ 30%
গ 36%
ঘ 40%
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?
ক 36
খ 9
গ 12
ঘ 18
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?
ক 5 pi
খ 12.5 pi
গ 25 pi
ঘ 39.0625 pi
The ratio of the area of area of a circle to the radius of the radius of the circle is--
ক π
খ 2π
গ π2
ঘ none of these
The organizers of a fair projected a 25 percent increase in attendance this year over that of last year, but attendance this year actually decreased by 20 percent . what percent of the projected attendance was the actual attendance?
ক 45%
খ 56%
গ 64%
ঘ 75%
The organizers of a fair projected a 25 percent increase in attendance this year over that of last year, but attendance this year actually decreased by 20 percent. What percent of the projected attendance was the actual attendance?
ক 45%
খ 56%
গ 64%
ঘ 75%
The organizers of a fair projected a 25 percent increase in attendance this over that of last year but attendance this year actually decreased by 20 percent. What percent of the projected attendance was the actual attendance ?
ক 45%
খ 56%
গ 64%
ঘ 75%
Over the course of a year , a certain microbrewery increased its beer output by 70 percent, At the same time , it decreased its total working hours by 20 percent , By what percent did this factory increase its output per hour?
ক 90%
খ 112.5%
গ 212.5%
ঘ 50%

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