81.The area of a rhombus and that of a square are equal. The side of the square is 6 cm. If one of the diagonal of the rhombus is 4 cm, then find the length of its other diagonal.
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Short Answer Type
82.If the length, breadth and height of a cuboid are respectively equal to 6 cm, 4 cm and 7 cm, then find its total surface area.
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Long Answer Type
83.The edge of a cube is 2 cm. Find the total surface area of the cuboid formed by three such cubes joined edge to edge.
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Short Answer Type
84.A company is selling its suitcases according to their surface areas. A suitcase can be bought at the rate of Rs 0.05 per cm2. If the size of the suitcase purchased by Ramita is 80 cm × 48 cm × 24 cm, find the cost paid by Ramita for such 100 suitcases.
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85.A closed cylindrical tank of radius 7 cm and height 5 m is made from a sheet of metal. If the breadth of the rectangular sheet is 10 m, then find the length of the sheet.
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Long Answer Type
86.A road roller makes 250 complete revolution to move once over to once level a road. Find the area of the road levelled if the diameter of the road roller is 84 cm and length is 1 m.
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Short Answer Type
87.A cuboid is of dimensions 50 cm × 45 cm × 30 cm. How many small cubes with sides 5 cm can be places in the given cuboid?
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88.A square and a rectangle have same perimeter. If the side of the square is 60 cm and length of the rectangle is 80 m, then whose area is more and how much?
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89.Find the perimeter of a semicircular figure, if its diameter is 2.8 cm.
Long Answer Type
Short Answer Type
