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Black, because red and green are two primary colours which when mixed together gives black colour in terms of light and wavelength.
The volume of a sphere is 2304π cm3. Find the surface area of the given sphere.
A wire is moulded into a circle of radius 21m. Then the wire is bent and shaped into a rectangle of length 36 m. Find the area of the rectangle thus for...
If each interior angle of a regular polygon is 135 degrees, then number of side of this polygon is
What is the difference between (in m2) the area of a circular field of radius 35 metres and area of a rectangular piece of land having its di...
The perimeter of a square field is 16 cm more than the perimeter of a rectangle. The length of the rectangle is 72 cm which is 300% of its width. If a s...
A rod is in the form of a circle of radius 35 cm. What is the side of a square into which it can be bent?
The length and breadth of a rectangle are increased by 8% and 5%, respectively. By how much percentage will the area of the rectangle increase?
A storeroom has only steel and copper rods in the ratio 4:3, respectively and the weight of each steel and each copper rod is in the ratio 5:6, respecti...
The area of a square field is 4050 sq m. How long in seconds will a lady take to cross the field diagonally at the rate of 4.5 km/hr?
If the volume of a cuboidal tank is 3840 m3 and the ratio of the length, width and height of tank is 5:4:3 respectively then find the height ...
