Q : If the volume of two cubes are in the ratio of 343: 512, then what is the ratio of their total surface area?
(A) 64 : 125
(B) 49 : 64
(C) 64 : 343
(D) 49 : 25
Area of rectangle is 96 square meters. When the length of the same rectangle is increased by 6 metres and the breadth is decreased by 3 metres, then the area of rectangle decreases by 30 square metres. What is the perimeter of a square whose sides are equal to the length of the rectangle?
(A) 48 m
(B) 60 m
(C) 80 m
(D) 64 m
(E) 52 m
Area of the smallest square that can circular ring enclosed Ween of area 616 cm2 is
(A) 864 cm^2
(B) 764 cm^2
(C) 784 cm^2
(D) 824 cm^2
The breadth of a rectangular hall is three - fourth of its length. If the area of the floor is 768 sq. m., then the difference between the length and breadth of the hall is:
(A) 8 metres
(B) 12 metres
(C) 24 metres
(D) 32 metres
Find the inner surface area of all walls of a rectangular room with length 7 m breadth 5 m and height 3.5 m -
(A)
(B)
(C)
(D)
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