A rectangle has 15 cm as its length and 159 cm2 as its area. Its area is increased to 1 1/3 times the original area by increasing only its length its new perimeter is ____?
A. 50 cm
B. 60 cm
C. 70 cm
D. 80 cm
The length of a rectangle is twice its breadth, if length is decreased by 5 cm and the breadth is increased by 5 cm. The length of the rectangle is ___?
A. 20 cm
B. 30 cm
C. 40 cm
D. 50 cm
If the base of rectangle is increased by 10 % and the area is unchanged then the corresponding altitude must be decreased by ____?
A. 9 1/11 %
B. 10%
C. 11%
D. 11 1/9 %
If the diagonal of a square is doubled. How does the area of the square change?
A. Becomes fourfold
B. Becomes threefold
C. Becomes twofold
D. none of the above
Area of a square with side x is equal to the area of a triangle with base x. The altitude of the triangle is ____?
A. x/2
B. x
C. 2x
D. 4x
If the circumference of a circle is 352 meters then its area in Sq.m is __?
A. 9856
B. 8956
C. 6589
D. 5986
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 diameter of a circle is increased by 100 % its area is increased by ____?
A. 100%
B. 200%
C. 300%
D. 400%
A circular wire of radius 42 cm is cut and bent in the form of a rectangle whose sides are in the ration of 6:5 The smaller side if the rectangle is ____?
A. 30 cm
B. 60 cm
C. 72 cm
D. 132 cm
The number of rounds that a wheel of diameter 7/11 m will make in going 4 km is ____?
A. 1000
B. 1500
C. 1700
D. 2000
