Aluminium sulfate (Alum) is often used in the chemical precipitation process to remove phosphorus by forming an insoluble precipitate called aluminium phosphate.
Perimeter of a square and circumference of a circle are in the ratio 9:11, respectively. If area of the square is 81 cm2, then find the radiu...
If the angular diameter of the sun is 20, how far from the eye a coin of radius 4.95 cm be kept to hide the sun?
If the area of square is 196 cm² and the breadth of rectangle is 25% more and the length is 40% more than the side of the square, then find the the a...
The base of a right pyramid is a square with diagonal 16 units. Its slant edge is 17 units. What is its vertical height?
If the volumes of two cubes are in the ratio 343:64, then ratio of their edges is
How many factors does the number 6718464 have?
If the length of a rectangle becomes double and its breadth becomes three-fourth, then find the percentage increase in its area.
Four circles of equal radii are described about the four corners of a square so that each touches two of the other circles. If each side of the square i...
In a department 30% of the employees are females. 40% of the male employees know English. The total number of employees who know English is 46%. Find th...
The base of a prism is a triangle with sides 9 cm, 12 cm, and 15 cm, and its height is 20 cm. Find the volume of the prism.
