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Start learning 50% faster. Sign in nowSound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing. Sound also travels through plasma. Sound is a sequence of waves of pressure that propagates through compressible media such as air or water. (Sound can propagate through solids as well, but there are additional modes of propagation). Sound cannot travel through a vacuum because it does not provide the medium to propagate.
Total surface area of a right circular cylinder is 792π cm2. If the height of the cylinder is 3 cm less than its diameter, then find the dia...
Find the area of a regular hexagon whose side is half of the side of a square whose perimeter is 152 cm.
In a rectangular floor of length and breadth of 21 metres and 6 metres, respectively, square tiles each of 2 metre edge length are to be laid. If the co...
Radius of a circle is 10 cm. Angle made by chord AB at the centre of this circle is 60 degree. What is the length of this chord?
The distance between the centers of two circles of radius 2 cm and 8cm is 10 cm. Find the length of the direct common tangent.
The radius of a cylinder is increased by 20%, and its height is decreased by 10%. Find the percentage change in the volume of the cylinder.
The perimeter of a rectangle is 320 meters, and the difference between length and breadth is 80 meters. Find the area of the rectangle.
The area of a square field is 1250 sq m. How long in seconds will a lady take to cross the field diagonally at the rate of 5 km/hr?
Each side of square ‘A’ is 5 cm less than that of square ‘B’. The perimeter of a rectangle is 2 times the difference of the perimeters of the tw...
A cuboidal box has dimensions of length = 18 cm, breadth = 15 cm, and height = 10 cm. If the breadth of the box is increased by 20% and its height is r...
