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.Management Sciences
Category: Areas
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
(more…)
The area of a sector of a circle of radius 5 cm formed by an arc of length 3.5 cm is__________?
A. 0.35 cm2
B. 17.5 cm2
C. 8.75 cm2
D. 55 cm2
The ratio of the radius of two circles is 1: 3, and then the ratio of their areas is_________?
A. 1:3
B. 1:6
C. 1:9
D. 1:5
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