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.Management Sciences
Category: Areas
A rectangular water tank is open at the top. Its capacity is 24Cu.m.It’s length and breadth are 4m and 3m respectively. Ignoring the thickness of the material used for building the tank the total cost of painting the inner and outer surface of the tank at Rs. 10 per Sq.m is_________?
A. Rs.400
B. Rs.500
C. Rs.600
D. Rs.800
A hall is a 15m long and 12m board. If the sum of the areas of the floor and the ceiling is equal to the areas of the 4 walls the volume of the hall is:
A. 720 Cu.m
B. 1200 Cu.m
C. 361 Sq.cm
D. None of these
If a square and a rhombus stand on the same base then the ratio of the areas of the squares and the rhombus is:_________?
A. greater than 1
B. equal to 1
C. equal to 1/2
D. equal to ¼
If the circumference of a circle is 352 meters then its area in Sq.m is:________?
A. 9856
B. 8956
C. 6589
D. 5986
The length and breadth of a rectangle is increased by 10% and 25% respectively. What is the increase in the area?
A. 27.5%
B. 37.5%
C. 47.5%
D. 57.5%
The perimeter of a floor of a room is 18m.What is the area of four walls of the room if it; a height is 3m?
A. 21 Sq.m
B. 42 Sq.m
C. 54 Sq.m
D. 108 Sq.m
If the length of a rectangle is increased by 20% and it’s breadth is decreased by 20% then it area________?
A. Increased by 4%
B. decreased by 4%
C. Decreased by 1%
D. Remains unchanged
In a rhombus whose area is 144 sq.cm on of its diagonals is twice as long as the other. The lengths of its diagonals are:_________?
A. 24 cm,48cm
B. 12cm,24cm
C. 6√2cm,12√2cm
D. 6cm,12cm
The perimeter of a rectangle is 60m. If it’s length is twice its breadth then its area is__________?
A. 160m2
B. 180m2
C. 200m2
D. 220m2
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