A square sheet of side 5 cm is cut out from a rectangular piece of an aluminium sheet of length 9 cm and breadth 6 cm. What is the area of the aluminium sheet left over?
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A piece of metal is cut from a hollow metal sphere of radius R and is polished on both sides. A boy looks at the metal piece and finds his image 13 cm
Correct Answer - 69.33 cm
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A square is drawn with the length of side equal to the diagonal of a cube. If the area of the square is `72075 cm^(2)`, then find the side of the cube
Correct Answer - 155 cm
2 Answers 1 views
Find the capacity of a closed cuboidal cistern whose length is 3 m, breadth is 2 m and height is 6 m. Also find the area of iron sheet required to mak
Correct Answer - `72m^(2)`
2 Answers 1 views
If the perimeter of a rectangle is 10 cm and the difference between its length and breadth is 1 cm, then its length is ______ and its breadth is _____
Correct Answer - 3 cm and 2 cm
2 Answers 1 views
The length of a cuboid is 2 cm more than its height, whereas its breadth is 2 cm less than the height. Its height is equal to the side of a square hav
Correct Answer - 960 `cm^(3)`
2 Answers 3 views
From the four corners of a rectangular plastic sheet of size `34cmxx24cm`, four squares each of side 2 cm are cut and removed. The remaining sheet is
Correct Answer - Rs. 108
2 Answers 1 views
The length and breadth of a rectangular sheet of paper are 60 cm and 30 cm, respectively. A square of side 5 cm is cut and removed from the four corne
Correct Answer - `5000cm^(3)`
2 Answers 3 views
Find the volume, the lateral surface area and the total surface area of the cuboid whose dimensions are: (i) length = 12 cm, breadth = 8 cm and height
Correct Answer - (i) `432 cm^(3), 180 cm^(2), 372 cm^(2)` (ii) `2366 m^(3), 520m^(2), 1248 m^(2)` (iii) `45 m^(3), 21 m^(2), 201 m^(2)` (iv) `36m^(3), 291 m^(2), 303 m^(2)`
2 Answers 1 views
The length of an aluminium rod is 120 cm at 20 °C. What is its length at 80 °C, if coefficient of linear expansion of aluminium is 2.5 × 10^-5/°C?
Correct option is: (B) 120.18 cm
2 Answers 1 views
If the length and breadth of a rectangular sheet are √5 + √2 and √5 – √2 units, then it’s area in sq. units
Correct option is (C) 3 Area of rectangular sheet \(=(\sqrt{5}+\sqrt{2})(\sqrt{5}-\sqrt{2})\) \(=(\sqrt{5})^2-(\sqrt{2})^2\) = 5 - 2 = 3 square units
2 Answers 1 views