A basketball has a volume of 5600cm⊃3;. its radius is
Answer: C
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Volume of a sphere with radius r is obtained by multiplying its surface area by r and a constant. Find the value of constant:
Answer: B
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Dean has a cardboard box whose length, breadth and height are in the ratio 1:2:3. He makes a new box such that the length, breadth and height got increased by 100%, 200% and 200% respectively. How much less is volume of old box than the new box?
Answer: C
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A solid rubber sphere weighs 6kg when its diameter is 6cm. Using the same material, a hollow sphere is made with outer diameter 18cm and inner diameter 12 cm. What is its weight?
Answer: A
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If a cuboid is 2.7cm high, 7.8cm long and 3.7 wide then volume of cuboid is
Answer: A
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Ramesh’s bedroom has a rectangular floor. He built the 4 walls of this room in Rs. 24000 at the rate of Rs. 20 per sq. m. What is height of his bedroom if perimeter of the floor is 150m?
Answer: B
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A right circular cylinder of radius r cm and height h cm (h > 2r) just encloses a sphere of diameter
Answer: B
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On decreasing each side of cube by 21%, its surface area decreases by?
Answer: B
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If diameter of right circular cylinder is 18cm with height of 28cm and value of pi = 3.142 then total surface area of cylinder is
Answer: A
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The base radii of two circular cones of the same height are in the ratio 3 : 5. The ratio of their volumes are
Answer: A
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