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A rectangular paper of width 14 cm is rolled along its width and a cylinder of radius 20 cm is formed. Find the volume of the cylinder (Fig 11.45)? (Take `22/7` for

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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Diameter of cylinder A is 7 cm, and the height is 14 cm. Diameter of cylinder B is 14 cm and height is 7 cm. Without doing any calculations can you suggest whose volume is greater? Verify it by finding thevolume of both the cylinders. Check whether the cylinder with greater volume also has greater surface

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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Simplify and express the result in power notation with positive exponent. `(– 4)^5 ÷ (–

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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Express the following numbers in usual form. `4.5 xx

asked Jan 18, 2022 in 8th-maths by vaibhav (1.7k points)

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Express the following numbers in usual form. `5.8 xx 10^(12)`

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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In a stack there are 5 books each of thickness 20mm and 5 paper sheets each of thickness 0.016 mm. What is the total thickness of the

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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Solve 2y + 9 =

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

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Use the identity `(x + a) (x + b) = x^2 + (a + b) x + ab` to find the following products. (4x – 5) (4x – 1)

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

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Find the area of a rhombus whose side is 6 cm and whose altitude is 4 cm. If one of its diagonals is 8 cm long, find the length of the other

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

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Express the following numbers in usual form. `3.61492 xx

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

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In a hostel of 50 girls, there are food provisions for 40 days. If 30 more girls join the hostel, how long will these provisions

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

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Name the property under multiplication used in each of the following.

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

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Simplify. `(m^2 – n^2m)^2 +

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

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Using identities, evaluate. `1.05 xx

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

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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 by purvi (1.8k points)

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Express the product of `3.2 xx 10^6` and `4.1 xx 10^(–1)` in the standard

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

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The reciprocal of `(-3)/7xx((-7)/13)`

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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`(x+y)/2` is a rational

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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The reciprocal of `(-5)/7` is

asked Jan 18, 2022 in 8th-maths by vaibhav (1.7k points)

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The rational number 10.11 in the from p/q is

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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