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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 sumit (1.6k points)

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Three cubes of metal whose edges are 6 cm, 8 cm and 10 cm respectively are melted to form a single cube. The edge of the new cube

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

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If a cube fits exactly in a cylinder with height h, then the volume of the cube is __________ and surface area of the cube is

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

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The volume of a cylinder becomes __________ the original volume if its radius becomes half of the original

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

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The perimeter of a rectangle becomes __________ times its original perimeter, if its length and breadth are

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

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Two cylinders of same volume have their radii in the ratio 1:6, then ratio of their heights is

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

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The area of a trapezium with equal non-parallel sides is 168 `m^2`. If the lengths of the parallel sides are 36 m and 20 m, find the length of the non-parallel

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

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A bicycle wheel makes 500 revolutions in moving 1 km. Find the diameter of the

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

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The radius and height of a cylinder are in the ratio 3:2 and its volume is 19,404 `cm^3`. Find its radius and

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

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Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant

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

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `y^4 –

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

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `x^2 –

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 – 6x +

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 + 9x +

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `51x^3y^2z -:

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `76x^3yz^3 -:

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `–121p^3q^3r^3 -:

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

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Perform the following divisions: `(– qrxy + pryz – rxyz) -: (–

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

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The sum of (x + 5) observations is `x^4 – 625`. Find the mean of the

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

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The cost of a chocolate is Rs (x + y) and Rohit bought (x + y) chocolates. Find the total amount paid by him in terms of x. If x = 10, find the amount paid by

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

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