Questions by purvi

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Show that. `(a – b) (a + b) + (b – c) (b + c) + (c – a) (c + a) =

asked Jan 17, 2022 in 8th-maths

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Using `(x + a) (x + b) = x^2 + (a + b) x + ab`, find `5.1 xx 5.2`

asked Jan 17, 2022 in 8th-maths

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Draw the front view, side view and top view of the given objects. A military tent -(b) A table

asked Jan 17, 2022 in 8th-maths

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Draw the front view, side view and top view of the given objects. A dice -(f) A solid #fig

asked Jan 17, 2022 in 8th-maths

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Draw a map of your class room using proper scale and symbols for different

asked Jan 17, 2022 in 8th-maths

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A square and a rectangular field with measurements as given in the figure have the same perimeter. Which field has a larger

asked Jan 17, 2022 in 8th-maths

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An ant is moving around a few food pieces of different shapes scattered on the floor. For which food-piece would the ant have to take a longer round? Remember,circumference of a circle can be obtained by using the expression c = 2πr, where r is the radius of the

asked Jan 17, 2022 in 8th-maths

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Length of the fence of a trapezium shaped field ABCD is 120 m. If BC = 48 m, CD = 17 m and AD = 40 m, find the area of this field. Side AB is perpendicular to the parallel sides AD and

asked Jan 17, 2022 in 8th-maths

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Top surface of a raised platform is in the shape of a regular octagon as shown in the figure. Find the area of the octagonal

asked Jan 17, 2022 in 8th-maths

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A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal. How much sheet of metal is

asked Jan 17, 2022 in 8th-maths

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Given a cylindrical tank, in which situation will you find surface area and in which situation volume. Number of cement bags required to plaster

asked Jan 17, 2022 in 8th-maths

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A milk tank is in the form of cylinder whose radius is 1.5 m and length is 7 m. Find the quantity of milk in litres that can be stored in the

asked Jan 17, 2022 in 8th-maths

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Find the value of. `(3° + 4^(– 1)) xx

asked Jan 17, 2022 in 8th-maths

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asked Jan 17, 2022 in 8th-maths

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Express the following numbers in standard form.

asked Jan 17, 2022 in 8th-maths

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Express the number appearing in the following statements in standard form. Charge of an electron is 0.000,000,000,000,000,000,16

asked Jan 17, 2022 in 8th-maths

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In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of

asked Jan 17, 2022 in 8th-maths

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If 15 workers can build a wall in 48 hours, how many workers will be required to do the same work in 30

asked Jan 17, 2022 in 8th-maths

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Rehman is making a wheel using spokes. He wants to fix equal spokes in such a way that the angles between any pair of consecutive spokes are equal. Help him bycompleting the following table. sss 8 → 45°, 10 → 36°, 12 → 30° sss How many spokes would

asked Jan 17, 2022 in 8th-maths

+1 vote

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Two persons could fit new windows in a house in 3 days. One of the persons fell ill before the work started. How long would the job take

asked Jan 17, 2022 in 8th-maths

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