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An order was placed for the supply of a carper whose length and breadth were in the ratio of 3 : 2. Subsequently, the dimensions of the carpet were altered such that its length and breadth were in the ratio 7 : 3 but were was no change in its parameter. Find the ratio of the areas of the carpets in both the cases.
A. 4 : 3
B. 8 : 7
C. 4 : 1
D. 6 : 5
Mensuration · Easy · 3 weeks ago
The sector of a circle has radius of 21 cm and central angle 135o. Find its perimeter?
A. 91.5 cm
B. 93.5 cm
C. 94.5 cm
D. 92.5 cm
Mensuration · Easy · 3 weeks ago
The length of a rectangle is two – fifths of the radius of a circle. The radius of the circle is equal to the side of the square, whose area is 1225 sq.units. What is the area (in sq.units) of the rectangle if the rectangle if the breadth is 10 units?
A. 140
B. 156
C. 175
D. 214
Mensuration · Easy · 3 weeks ago
Find the area of a rhombus whose side is 25 cm and one of the diagonals is 30 cm?
A. 225 sq.m
B. 360 sq.m
C. 600 sq.m
D. 480 sq.m
Mensuration · Easy · 3 weeks ago
The ratio of the volumes of two cubes is 729 : 1331. What is the ratio of their total surface areas?
A. 81 : 121
B. 9 : 11
C. 729 : 1331
D. 27 : 12
Mensuration · Easy · 3 weeks ago
A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 16 cm. What is the length of the wire?
A. 45 cm
B. 18 cm
C. 90 cm
D. None of these
Mensuration · Easy · 3 weeks ago
The volumes of two cones are in the ratio 1 : 10 and the radii of the cones are in the ratio of 1 : 2. What is the length of the wire?
A. 2 : 5
B. 1 : 5
C. 3 : 5
D. 4 : 5
Mensuration · Easy · 3 weeks ago
The radius of a wheel is 22.4 cm. What is the distance covered by the wheel in making 500 resolutions.
A. 252 m
B. 704 m
C. 352 m
D. 808 m
Mensuration · Easy · 3 weeks ago
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