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World Environment Day is celebrated annually on 5 June and is the United Nations' principal vehicle for encouraging awareness and action for the protection of the environment. First held in 1973, it has been a platform for raising awareness on environmental issues such as marine pollution, overpopulation, global warming,sustainable development and wildlife crime.
The ratio of the curved surface area and total surface area of a cylinder is 16 : 17 . If the curved surface area of the cylinder is 308m². Find th...
In AABC, P is a point on AB such that PB: AP = 3: 4 and PQ is parallel to AC. If AR and QS are perpendicular to PC and QS = 9 cm, what is the length (in...
A sphere of radius 21 cm is melted and recast into 66 smaller spheres of equal size. Find the radius of each smaller sphere(approximately).
If ratio of interior & exterior angle of a regular polygon is 5:3, then number of sides of the polygon is
The circumference of a circle is equal to the perimeter of a rectangle whose length and breadth are in ratio 7:5, respectively. If the area of the recta...
Perimeter of a square field is 160 meters and the area of a rectangular field is 40% more than that of the square field. Find the area (in m2...
PQRS is a rectangle. T is a point on PQ such that RTQ is an isosceles triangle and PT = 5 QT. If the area of triangle RTQ is 12 √3 sq.cm, then the ar...
If the ratio of areas of two circle is 4:25, then the ratio of their circumferences will be:
The diagonal of the square is 10 √ 2 cm. Find the diagonal of another square whose area is triple that of the first square.
A stone is thrown vertically with the velocity which would just carry it to height of 100 feet. Two seconds later another stone is projected vertically ...