Questions by Arun

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Most of the sailboats have two sails, the jib and the mainsail. Assume that the sails are triangles. Find the total area of each sail of the sail boats to the nearest tenth.

asked Jan 17, 2022 in 8th-maths

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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

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Find the area of the shaded portion in the following

asked Jan 17, 2022 in 8th-maths

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asked Jan 17, 2022 in 8th-maths

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Find the volume of each of the given figure if volume = base area `xx`height.

asked Jan 17, 2022 in 8th-maths

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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

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A wooden box (including the lid) has external dimensions 40 cm by 34 cm by 30 cm. If the wood is 1 cm thick, how many `cm^3` of wood is used in

asked Jan 17, 2022 in 8th-maths

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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

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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

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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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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 60 edges and 40 vertices. Find the number of its

asked Jan 17, 2022 in 8th-maths

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Draw the net of a regular tetrahedron with side 6

asked Jan 17, 2022 in 8th-maths

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Refer to the given map to answer the following questions

asked Jan 17, 2022 in 8th-maths

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The side of a square board is 50 cm. A student has to draw its image in her notebook. If the drawing of the square board in the notebook has perimeter of 40 cm, then by which scale the figure has been

asked Jan 17, 2022 in 8th-maths

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Find the scale. (a) Actual size 12 m Drawing size 3 cm (b) Actual size 45 feet Drawing size 5

asked Jan 17, 2022 in 8th-maths

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a ( b + c) = ab + ac

asked Jan 17, 2022 in 8th-maths

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If we subtract `–3x^2y^2` from `x^2y^2`, then we

asked Jan 17, 2022 in 8th-maths

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Square of 3x – 4y

asked Jan 17, 2022 in 8th-maths

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Coefficient of y in the term `3/(−y)`

asked Jan 17, 2022 in 8th-maths

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