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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 purvi (1.8k points)

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On dividing `8^5` by _________ we get

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

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Long back in ancient times, a farmer saved the life of a king’s daughter. The king decided to reward the farmer with whatever he wished. The farmer, who was a chess champion, made an unusal request: “I would like you to place 1 rupee on the first square of my chessboard, 2 rupees on the second square, 4 on the third square, 8 on the fourth square, and so on, until you have covered all 64 squares. Each square should have twice as many rupees as the previous square.” The king thought this to be too less and asked the

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

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Sunscreens block harmful ultraviolet (UV) rays produced by the sun. Each sunscreen has a Sun Protection Factor (SPF) that tells you how many minutes you can stay in the sun before you receive one minute of burning UV rays. For example, if you apply sunscreen with SPF 15, you get 1 minute of UV rays for every 15 minutes you stay in the sun. 1. A sunscreen with SPF 15 allows only `1/15` of the sun’s UV rays. What per cent of UV rays does the sunscreen abort? 2. Suppose a sunscreen allows 25% of the sun’s UV rays. a.

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

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Find the length of the largest pole that can be placed in a room of dimensions `12 m xx 4 m xx 3 m`. Find the area of the following fields. All dimensions are in

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

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `16x^4 –

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

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Perform the following divisions: `(x^3y^3 + x^2y^3 – xy^4 + xy) -:

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

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What should be added to `4c (– a + b + c)` to obtain `3a (a + b + c) – 2b(a – b +

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

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A particular star is at a distance of about `8.1 xx 10^13` km from the Earth. Assuring that light travels at `3 xx 10^8` m per second, find how long does light takes from that star to reach the

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

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A lady buys some pencils for Rs 3 and an equal number for Rs 6. She sells them for Rs 7. Find her gain or

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

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Sunscreens block harmful ultraviolet (UV) rays produced by the sun. Each sunscreen has a Sun Protection Factor (SPF) that tells you how many minutes you can stay in the sun before you receive one minute of burning UV rays. For example, if you apply sunscreen with SPF 15, you get 1 minute of UV rays for every 15 minutes you stay in the sun. 1. A sunscreen with SPF 15 allows only `1/15` of the sun’s UV rays. What per cent of UV rays does the sunscreen abort? 2. Suppose a sunscreen allows 25% of the sun’s UV rays. a.

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

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A packet of sweets was distributed among 10 children and each of them received 4 sweets. If it is distributed among 8 children, how many sweets will each child

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

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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 by purvi (1.8k points)

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Let abc be a three digit number. Then abc + bca + cab is not divisible

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

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A three-digit number abc is divisible by 6 if c is an even number and a + b + c is a multiple of

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

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Find the number of digits in the square root of each of the following numbers (without any calculation). 4489

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

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Three consecutive integers are such that when they are taken in increasing order and multiplied by 2, 3 and 4 respectively, they add up to 74. Find these

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

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Solve 2x – 3 = x +

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

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There is a narrow rectangular plot, reserved for a school, in Mahuli village. The length and breadth of the plot are in the ratio 11:4.At the rate Rs100 per metre it will cost the village panchayat Rs 75000 to fence the plot. What are the dimensions of the

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

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In Fig 3.26, BEST is a parallelogram. Find the values x, y and z.

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

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