surface areas and volumes ncert Archives - Page 8 of 12

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AnilSinghBoraGuru

Asked: August 23, 2021In: NCERT Class 9th Maths

Shanti Sweets Stall was placing an order for making cardboard boxes for packing their sweets. Two sizes of boxes were required. The bigger of dimensions 25 cm×20cm×5cm and the smaller of dimension 15cm×12cm×5cm. For all the overlaps, 5% of the total surface area is required extra. If the cost of the cardboard is Rs. 4 for 1000 cm2, find the cost of cardboard required for supplying 250 boxes of each kind. Q.7

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AnilSinghBoraGuru

Asked: August 23, 2021In: NCERT Class 9th Maths

A small indoor greenhouse (herbarium) is made entirely of glass panes (including base) held together with tape. It is 30cm long, 25 cm wide and 25 cm high. (i)What is the area of the glass? (ii)How much of tape is needed for all the 12 edges? Q.6

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AnilSinghBoraGuru

Asked: August 23, 2021In: NCERT Class 9th Maths

A cubical box has each edge 10 cm and another cuboidal box is 12.5cm long, 10 cm wide and 8 cm high (i) Which box has the greater lateral surface area and by how much? (ii) Which box has the smaller total surface area and by how much? Q.5

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

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AnilSinghBoraGuru

Asked: August 23, 2021In: NCERT Class 9th Maths

The paint in a certain container is sufficient to paint an area equal to 9.375 m2. How many bricks of dimensions 22.5 cm×10 cm×7.5 cm can be painted out of this container? Q.4

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How can i solve this tough question of class 9th ncert of Surface areas and Volumes of math of exercise ...Read more

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AnilSinghBoraGuru

Asked: August 23, 2021In: NCERT Class 9th Maths

The floor of a rectangular hall has a perimeter 250 m. If the cost of painting the four walls at the rate of Rs.10 per m2 is Rs.15000, find the height of the hall. [Hint: Area of the four walls = Lateral surface area.] Q.3

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Give me the best way for solving the question of class 9th of Surface areas and Volumes of exercise 13.1 ...Read more

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AnilSinghBoraGuru

Asked: August 23, 2021In: NCERT Class 9th Maths

The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and ceiling at the rate of Rs 7.50 per m2. Q.2

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AnilSinghBoraGuru

Asked: August 23, 2021In: NCERT Class 9th Maths

A plastic box 1.5 m long, 1.25 m wide and 65 cm deep, is to be made. It is to be open at the top. Ignoring the thickness of the plastic sheet, determine: (i)The area of the sheet required for making the box. (ii)The cost of sheet for it, if a sheet measuring 1m2 costs Rs. 20. Q.1

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What is the easiest way for solving the question of class 9th ncert math of exercise 13.1 of math of ...Read more

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SonuNewbie

Asked: August 3, 2021In: NCERT Class 10th Maths

Derive the formula for the volume of the frustum of a cone. Q.7

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Find the important question of ncert class 10th surface areas and volumes of exercise 13.5 question number 7 . Give ...Read more

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SonuNewbie

Asked: August 3, 2021In: NCERT Class 10th Maths

Derive the formula for the curved surface area and total surface area of the frustum of a cone, given to you in Section 13.5, using the symbols as explained. Q.6

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Today i am solving the surface areas and volumes of ncert class 10th of exercise 13.5 question number 6. Find ...Read more

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SonuNewbie

Asked: August 3, 2021In: NCERT Class 10th Maths

An oil funnel made of tin sheet consists of a 10 cm long cylindrical portion attached to a frustum of a cone. If the total height is 22 cm, diameter of the cylindrical portion is 8 cm and the diameter of the top of the funnel is 18 cm, find the area of the tin sheet required to make the funnel (see Fig.). Q.5

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