Questions by purvi

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A cube of side 5 cm is cut into as many 1 cm cubes as possible. What is the ratio of the surface area of the original cube to that of the sum of the surface areas of the smaller

asked Jan 17, 2022 in 8th-maths

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A square sheet of paper is converted into a cylinder by rolling it along its side. What is the ratio of the base radius to the side of the

asked Jan 17, 2022 in 8th-maths

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If the length of each edge of a cube is tripled, what will be the change in its

asked Jan 17, 2022 in 8th-maths

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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

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Metallic discs of radius 0.75 cm and thickness 0.2 cm are melted to obtain 508.68 `cm^3` of metal. Find the number of discs melted (use π =

asked Jan 17, 2022 in 8th-maths

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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

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Look at the shapes given below and state which of these are polyhedra using Euler’s formula.

asked Jan 17, 2022 in 8th-maths

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Count the number of cubes in the given shapes.

asked Jan 17, 2022 in 8th-maths

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Count the number of cubes in the given shapes.

asked Jan 17, 2022 in 8th-maths

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Draw the front, side and top view of the given shapes.

asked Jan 17, 2022 in 8th-maths

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Draw the front, side and top view of the given shapes.

asked Jan 17, 2022 in 8th-maths

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A polyhedron has 20 faces and 12 vertices. Find the edges of the

asked Jan 17, 2022 in 8th-maths

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Verify that `(11pq + 4q)^2 – (11pq – 4q)^2 =

asked Jan 17, 2022 in 8th-maths

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By using suitable identity, evaluate `x^2+1/x^2`, if

asked Jan 17, 2022 in 8th-maths

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Like term as `4m^3n^2`

asked Jan 17, 2022 in 8th-maths

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Factorised form of `r^2 – 10r + 21`

asked Jan 17, 2022 in 8th-maths

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On dividing `p (4p^2 – 16)` by 4p (p – 2), we

asked Jan 17, 2022 in 8th-maths

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Number of factors of `(a + b)^2 `

asked Jan 17, 2022 in 8th-maths

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`(a + b)^2 – 2ab` = ___________ +

asked Jan 17, 2022 in 8th-maths

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(x + a) (x + b) = `x^2 + (a + b) x` +

asked Jan 17, 2022 in 8th-maths

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