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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 by krutika (1.7k points)

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There is a pentagonal shaped park as shown in the figure. For finding its area Jyoti and Kavita divided it in two different ways. Find the area of this park using both ways. Can you suggest some other wayof finding its

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

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Diagram of the adjacent picture frame has outer dimensions =`24 cm xx 28 cm` and inner dimensions 16 cm xx 20 cm. Find the area of each section of the frame, if the width of each section is same.

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

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An aquarium is in the form of a cuboid whose external measures are `80 cm xx 30 cm xx 40 cm`. The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper

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

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The internal measures of a cuboidal room are `12 m xx 8 m xx 4 m`. Find the total cost of whitewashing all four walls of a room, if the cost of white washing is Rs 5 per `m^2`. What will be the cost of white washing if the ceiling of the room is also whitewashed.

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

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In a building there are 24 cylindrical pillars. The radius of each pillar is 28 cm and height is 4 m. Find the total cost of painting the curved surface area of all pillars at the rate of Rs 8 per

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

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Find the height of a cylinder whose radius is 7 cm and the total surface area is 968

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

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There are two cuboidal boxes as shown in the adjoining figure. Which box requires the lesser amount of material to

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

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A suitcase with measures `80 cm xx 48 cm xx 24 cm` is to be covered with a tarpaulin cloth. How many metres of tarpaulin of width 96 cm is required to cover 100 such

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

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Find the side of a cube whose surface area is 600

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

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Rukhsar painted the outside of the cabinet of measure `1 m xx 2 m xx 1.5 m`. How much surface area did she cover if she painted all except the bottom of the

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

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Daniel is painting the walls and ceiling of a cuboidal hall with length, breadth and height of 15 m, 10 m and 7 m respectively. From each can of paint 100 `m^2` of area is painted. How many cans of paint will she need to paint the

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

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Describe how the two figures at the right are alike and how they are different. Which box has larger lateral surface

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

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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 by krutika (1.7k points)

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The lateral surface area of a hollow cylinder is 4224 `cm^2`. It is cut along its height and formed a rectangular sheet of width 33 cm. Find the perimeter of rectangular

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

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A road roller takes 750 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 84 cm and length is 1

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

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A company packages its milk powder in cylindrical container whose base has a diameter of 14 cm and height 20 cm. Company places a label around the surface ofthe container (as shown in the figure). If the label is placed 2 cm from top and bottom, what is the area of the

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

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Find the height of a cuboid whose volume is 275 `cm^3` and base area is 25 `cm^2`

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

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A godown is in the form of a cuboid of measures `60 m xx 40 m xx 30 m`. How many cuboidal boxes can be stored in it if the volume of one box is 0.8 `m^3`

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

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

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