BED ROCK

ABCD is a flower bed.If OA=21m and OC=14m, find the area of the bed. (Take pi=22/7)

There are two circular flower beds on two sides of a square lawn ABCD of side 56m .If the centre of each circular flower bed is the point of intersection of the diagonals of the square lawn,find the sum of the areas of the lawn and the flower beds.

A well is dry in a bed of rock containing fluorspar (CaF_(2)) . If the well contains 20,000 L of H_(2)O , what is the amount of F^(-) in it K_(SP) of CaF_(2) = 4 xx 10^(-11)

Two boats are anchored a distance 'd' apart in a sea, where seabed is at a uniform depth of D and consists of a flat rock bed. If a gun is fired at a boat, in how much time will the firing be heard at te other boat? (Given: speed of sound in air is v_(a) . in the water is v_(w) and in the rock is v_(r) )

Rocks|Igneous Rocks|Sedimentary Rocks|Metamorphic Rocks|Rock Cycle

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Bed bug transmits

Patient : Fowler Bed : : _?_