Recent questions tagged chapter11

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External dimensions of a closed wooden box are in the ratio 5:4:3. If the cost of painting its outer surface at the rate of Rs 5 per d`m^2` is Rs 11,750, find the dimensions of the

asked Jan 17, 2022 in 8th-maths by nishit (1.8k points)

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The capacity of a closed cylindrical vessel of height 1 m is 15.4 L. How many square metres of metal sheet would be needed to make

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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What will happen to the volume of the cube, if its edge is (a) tripled (b) reduced to

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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A rectangular sheet of dimensions `25 cm xx 7 cm` is rotated about its longer side. Find the volume and the whole surface area of the solid thus

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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From a pipe of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in 1

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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What is the area of the triangle ADE in the following figure?

asked Jan 17, 2022 in 8th-maths by nishit (1.8k points)

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What will be the change in the volume of a cube when its side becomes 10 times the original

asked Jan 17, 2022 in 8th-maths by uday (1.6k points)

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Area of a rhombus is equal to __________ of its

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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If the area of a face of a cube is 10 `cm^2`, then the total surface area of the cube is

asked Jan 17, 2022 in 8th-maths by uday (1.6k points)

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1L = 1000

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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Amount of region occupied by a solid is called its surface

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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160 `m^3` of water is to be used to irrigate a rectangular field whose area is 800 `m^2`. What will be the height of the water level in the

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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Find the area of a rhombus whose one side measures 5 cm and one diagonal as 8

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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The parallel sides of a trapezium are 40 cm and 20 cm. If its non-parallel sides are both equal, each being 26 cm, find the area of the

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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Find the area of polygon ABCDEF, if AD = 18cm, AQ = 14 cm, AP = 12 cm, AN = 8 cm, AM = 4 cm, and FM, EP, QC and BN are perpendiculars to diagonal

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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A cube of side 5 cm is painted on all its faces. If it is sliced into 1 cubic centimetre cubes, how many 1 cubic centimetre cubes will have exactly one of their faces

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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A cube of side 4 cm is cut into 1 cm cubes. What is the ratio of the surface areas of the original cubes and cut-out

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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A circle of maximum possible size is cut from a square sheet of board. Subsequently, a square of maximum possible size is cut from the resultant circle. What will be the area of the final

asked Jan 17, 2022 in 8th-maths by krutika (1.7k points)

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What is the area of the largest triangle that can be fitted into a rectangle of length l units and width w

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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If the height of a cylinder becomes `1/4` of the original height and the radius is doubled, then which of the following will be

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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