The diagonal of a cube is 9√3 cm. What is its volume?
Correct answer D. 729 cu cm
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Maths MCQs & Aptitude MCQs
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A cylindrical drum has a base radius of 7 cm and a height of 20 cm. Taking π = 22/7, what is its volume?
Correct answer C. 3,080 cu cm
A closed cylindrical tank has a base radius of 14 cm and a height of 15 cm. Taking π = 22/7, what is its total surface area?
Correct answer A. 2,552 sq cm
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A right circular cone has a base radius of 21 cm and a vertical height of 20 cm. Taking π = 22/7, what is its curved surface area?
Correct answer B. 1,914 sq cm
A conical heap of grain has a base radius of 6 m and a height of 14 m. Taking π = 22/7, what is its volume?
Correct answer D. 528 cu m
WTaking π = 22/7, hat is the volume of a solid sphere of radius 21 cm?
Correct answer B. 38,808 cu cm
WTaking π = 22/7, hat is the surface area of a ball of radius 3.5 cm?
Correct answer D. 154 sq cm
WTaking π = 22/7, hat is the total surface area of a solid hemisphere of radius 14 cm?
Correct answer A. 1,848 sq cm
A hemispherical bowl has an inner radius of 10.5 cm. Taking π = 22/7, how much soup can it hold?
Correct answer D. 2,425.5 cu cm
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A solid metal sphere of radius 6 cm is melted and recast into a cone whose base radius is also 6 cm. What is the height of the cone?
Correct answer B. 24 cm
A metal cuboid measuring 44 cm by 21 cm by 10 cm is melted and recast into a cylinder of base radius 7 cm. Taking π = 22/7, what is the height of the cylinder?
Correct answer A. 60 cm
How many lead balls of radius 1 cm can be made by melting a solid lead sphere of radius 5 cm?
Correct answer A. 125
A solid metal cylinder of radius 4.5 cm and height 10 cm is melted to make coins of radius 0.75 cm and thickness 0.2 cm. How many coins are obtained?
Correct answer B. 1,800
A copper sphere of radius 3 cm is melted and drawn into a wire of uniform radius 0.1 cm. What is the length of the wire?
Correct answer A. 36 m
Three solid metal cubes of edges 1 cm, 6 cm and 8 cm are melted together to form a single cube. What is the edge of the new cube?
Correct answer C. 9 cm
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A field is in the shape of a trapezium whose parallel sides are 18 m and 30 m and the distance between them is 11 m. What is its area?
Correct answer C. 264 sq m
A wire of length 88 cm is first bent into a square and then into a circle. Taking π = 22/7, by how much does the area of the circle exceed the area of the square?
Correct answer B. 132 sq cm
A room is 8 m long, 6 m wide and 4 m high. What is the cost of painting its four walls at Rs. 35 per square metre?
Correct answer B. Rs. 3,920
The perimeter of a rectangular sheet is 46 cm and its diagonal is 17 cm. What is its area?
Correct answer D. 120 sq cm
When both the length and the breadth of a rectangular plot are increased by 10 m, its area increases by 500 sq m. What is the perimeter of the original plot?
Correct answer A. 80 m