pa areas

Find the area of the figure ABCD enclosed in the rectangle PQRS with PQ = 46 cm, QR = 30 cm, SD = QB = 10 cm and PA = RC = 20 cm. => 1050 sq cm or 730 sq cm or 720 sq cm or 1215 sq cm..

The concept of biosphere reserves has been evolved by UNESCO's Man and Biosphere Programme (MABP). A biosphere reserve is a specified area in which multiple use of the land is permitted by dividing it into zones, each for a particular activit..

a) It prevents the back suction of water into the apparatus. b) It provides a larger surface area for dissolution of hydrogen chloride g..

If R = resistance l = Length of conductor a = area of cross section Then ..

01. - A loop of wire of area 1m 2 is placed perpendicular to a uniform magnetic field of 1Wbm - 2 . If the field is uniformly increased to 2Wbm - 2 in a time of 10 seconds, find the induced EM..

Individuals living in the same area are referred as local populations. They all experience similar ecological processess at a particular stage of the life cycle. Similar populations of a species occupying different geographical areas are called sister populations. Population is ..

02. - A square wire of side 3.0 cm is placed 25 cm away from a concave mirror of focal length 10 cm. What is the area enclosed by the image of the wire? Given: The centre of the wire is on the axis of the mirror, with its two sides normal to the axi..

A stable and self sufficient community has certain specific characteristics. a) Habitat Biotic community occupies particular area with specific physical environment, which acts as a limiting factor, regulating the population size of various species within the community. b) Self suffi..

Cellular respiration is common to all organisms - plants or animals. However, the external respiration, that is, the mechanism of gaseous exchange is different for different organisms. In plants, it is through pores over the body surface. In animals, the various ways of gaseous exchange are also ca..

'The amount of organic matter or biomass produced by an individual organism, population, community or ecosystem during a given period of time is called productivity'. Primary production refers to all or any part of the energy fixed by plants possessing chlorophyll. The total amount of solar energy ..