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.Management Sciences
Category: Areas
If the radius of a circle be reduced by 50% its area is reduced by:_________?
A. 25 %
B. 50%
C. 75%
D. 100%
If the wheel is 14 cm then the number of revolutions to cover a distance of 1056 cm is?
A. 15
B. 10
C. 14
D. 12
The area of sector of a circle whose radius is 12 metro and whose angle at the center is 42° is?
A. 26.4 m2
B. 39.6 m2
C. 52.8 m2
D. 79.2 m2
A rectangular field has area equal to 150 sq m and perimeter 50 m. Its length and breadth must be________?
A. 12 m, 10 m
B. 13 m, 12 m
C. 14 m, 11 m
D. 15 m, 10 m
What is the ratio between perimeters of two squares one having 3 times the diagonal then the other?
A. 4:8
B. 1:4
C. 6:2
D. 3:1
The perimeter of circle field and a square field are equal. If the area of these square field is 12100m2, the area of a circular field will be_________?
A. 15500Sq.m
B. 15400Sq.m
C. 15200Sq.m
D. 15300Sq.m
A circle and a rectangle have the same perimeter. The sides of the rectangle are 18cm and 26cm.What is the area of the circle?
A. 88cm2
B. 154cm2
C. 616cm2
D. 1250cm2
The altitude of an equilateral triangle of side 2√3 cm is_________?
A. 3/2 cm
B. 1/2 cm
C. 3/4 cm
D. 3 cm
The length of a rectangular plot is increased by 25%. To keep it’s area uncharged the width of the plot should be___________?
A. Kept unchanged
B. Increased by 25%
C. Increased by 20%
D. Reduced by 20%
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