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Find the volume of a hemisphere whose radius is 25% smaller than the side length of a square with a perimeter of 160 cm.
In an examination the average marks of Rohit is 55. If he got 15 more marks in science and 27 more marks in maths then his average would have been 61. F...
At the end of a business conference the ten people present all shake hands with each other once. How many handshakes will there be altogether?
When the ratio of the length and breadth of the rectangle is given as 3:2. If the perimeter of the rectangle is equal to the perimeter of the square, wh...
If sin (A + B) = cos (A + B), what is the value of tan A?
If a six digit number 3x 7z 8y is divisible by 7, 11, 13, then the average value of x, y, z is:
For a positive integer n, 25n – 52n is divisible by:
Perimeter of a square and circumference of a circle are in the ratio 15:11, respectively. If area of the square is 225 cm2, then find the rad...
A race track is in the shape of a rectangle with length of 80 metres and area of 2400 m2. A car takes 20 seconds to make one lap around the p...
The volume of a rectangular tank is 1680 m³, and the ratio of its length, width, and height is 7:6:5, respectively. What is the length of the rectangul...