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.Management Sciences
Category: Areas
The perimeter of a semi circle is 144 cm then the radius is_________?
A. 25 cm
B. 28 cm
C. 30 cm
D. 35 cm
If the ratio of the areas of two squares is 9:1 ratio of their perimeters is_________?
A. 9:1
B. 3:1
C. 3:4
D. 1:3
The area of a triangle will be when a = 1m, b = 2m, c = 3m, a, b, c being lengths of respective sides.
A. 0 sq m
B. 3 sq m
C. 2 sq m
D. 6 sq m
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 diameter of a circle is increased by 100 % its area is increased by:_________?
A. 100%
B. 200%
C. 300%
D. 400%
A covered wooden box has the inner measure as 115cm 75cm and 35cm and the thickness of wood is 2.5cm. The volume of the wood is____________?
A. 81000cu.cm
B. 81775cu.cm
C. 82125cu.cm
D. None of these
If the height of a triangle is decreased by 40% and its base is increased by 40% what will be the effect on its area?
A. No change
B. 8%decrease
C. 16% Decrease
D. 16%increases
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