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Yeast ferments sugar to alcohol; Acetobacter bacteria oxidize alcohol to acetic acid.
The sum of the total surface areas of two cubes is 1926 cm2. If the product of the length of their edges is 136 cm2, then find the...
A cylindrical tank with a radius of 7 m is half-filled with water. If a cuboidal block of dimensions 2 m × 5.5 m × 7 m is submerged completely into th...
A cylindrical tank has a radius of 8 meters and a height of 12 meters. If the tank is filled with water, how much time will it take to fill the tank com...
The total population of a village is 1000. The number of males and females increases by 6% and 8% respectively and consequently the population of the vi...
A man distributes 10%, 18% and 22% of his salary into his three children who spend 40%, 60% and 25% of that amount respectively. The difference between ...
Steel is used to make a hemispherical bowl that is 0.37 cm thick. The bow's inner radius is 6 cm. Find the bowl's outside curved surface.
A rectangular piece of copper foil of length 56 cm and area 616 cm2 is folded along its width to form a cylinder such that there is only one ...
The circumference of a circle is 66 cm and the length of the rectangle is 4 times the radius of the circle. Find the area (in cm2) of the rec...
In a rectangular floor of length and breadth of 16 metres and 7 metres, respectively, square tiles each of 4 metre edge length are to be laid. If the co...
A right triangle ABC with sides 9 cm ,12cm and 15cm is revolved about the side 12 cm. What is the volume of the solid so obtained? (in cm 3 )