Let the radius of the circular field = 'r' metres Then, area of the field = π X r2 = (22/7) X r2 = 1386 So, r2 = 1386 X (7/22) = 441 So, r = √441 = 21 {Since, radius cannot be negative} Circumference of the circular field = 2 X (22/7) X 21 = 132 metres So, surface area of one side of the compound wall = 2πr X height = 132 X 3 = 396 m2
Which law states that "the rate of heat loss of a body is directly proportional to the temperature difference between the body and its surroundings"?
An aircraft can perform aerobatic manoeuvres in a vertical loop because of-
A stone of mass 0.08 kg is thrown vertically upwards. Give the direction and magnitude of the net force on the stone during its downward motion. Ignore ...
An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is New...
A stream of water flowing horizontally with a speed of 20 m/s pushes out of a tube of cross-sectional area 10-1m2 and hits at a v...
In half-wave rectifier, what is the output frequency if the input frequency is 40 Hz. What is the output frequency of a full-wave rectifier for the same...
Which of the following particles in motion, having the same kinetic energy, has the shortest wavelength?
When a forward bias is applied to a p-n junction, it
How does the angle of minimum deviation of a glass prism of refractive index 1.5 change, if it is immersed in a liquid of refractive index 1.25?
What is the momentum of an object of mass 1/2 m, moving with a velocity of 2V?
