surface areas and volumes ncert Archives - Page 3 of 12

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bhagwansinghGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

A lead pencil consists of a cylinder of wood with solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the is 1 mm. If the length of the pencil is 14 cm, find the volume of the wood and that of the graphite. (Assume π = 22/7) Q.7

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What are the different way for solving the question for class 9th question of Surface Areas and Volumes chapter of ...Read more

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bhagwansinghGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

The capacity of a closed cylindrical vessel of height 1m is15.4 liters. How many square meters of metal sheet would be needed to make it? (Assume π = 22/7) Q.6

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bhagwansinghGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

It costs Rs 2200 to paint the inner curved surface of a cylindrical vessel 10m deep. If the cost of painting is at the rate of Rs 20 per m2, find (i) inner curved surface area of the vessel (ii) radius of the base (iii) capacity of the vessel (Assume π = 22/7) Q.5

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bhagwansinghGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

If the lateral surface of a cylinder is 94.2cm2 and its height is 5cm, then find (i) radius of its base (ii) its volume.[Use π= 3.14] Q.4

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What is the simplest way for solving the question of class 9th of exercise 13.6 of math of question no.4 ...Read more

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bhagwansinghGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

A soft drink is available in two packs – (i) a tin can with a rectangular base of length 5cm and width 4cm, having a height of 15 cm and (ii) a plastic cylinder with circular base of diameter 7cm and height 10cm. Which container has greater capacity and by how much? (Assume π=22/7) Q.3

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bhagwansinghGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

The inner diameter of a cylindrical wooden pipe is 24cm and its outer diameter is 28 cm. The length of the pipe is 35cm.Find the mass of the pipe, if 1cm3 of wood has a mass of 0.6g. (Assume π = 22/7) Q.2

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Give me the best way for solving the question of class 9th of Surface areas and Volumes of exercise 13.6 ...Read more

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bhagwansinghGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

The circumference of the base of cylindrical vessel is 132cm and its height is 25cm. How many litres of water can it hold? (1000 cm3= 1L) (Assume π = 22/7) Q.1

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AnilSinghBoraGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

A river 3m deep and 40m wide is flowing at the rate of 2km per hour. How much water will fall into the sea in a minute? Q.9

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What is the easiest way for solving the question of class 9th ncert math of exercise 13.5 of math of ...Read more

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AnilSinghBoraGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

A solid cube of side 12 cm is cut into eight cubes of equal volume. What will be the side of the new cube? Also, find the ratio between their surface areas. Q.8

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AnilSinghBoraGuru

Asked: October 20, 2021In: NCERT Class 9th Maths

A godown measures 40 m×25m×15 m. Find the maximum number of wooden crates each measuring 1.5m×1.25 m×0.5 m that can be stored in the godown. Q.7

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