Question

Four boys Arun, Balu, Ram and Raju are playing a game in a circular playground.

Arun, Balu & Raju stands on a circle and Ram stands at the centre of a circle.

Observe the diagram and answer the following:

a) What is the name of the line segment joining Balu & Raju called?

i)segment ii) chord iii) diameter iv) radius

b) Find the angle formed between the line segments joining Balu & Arun and

Arun & Raju.

i)450

ii) 900

iii) 200

iv) 250

c) Find the angle formed between the line segments joining Balu & Ram and Ram

& Raju.

i)450

ii) 900

iii) 200

iv) 250
d) What is the portion of the grassy region of circular ground called?

i)major segment ii)minor sector iii) major sector iv) minor segment

e) The distance between Balu & Ram and Ram & Raju are equal . Give reason.

i) radii are equal ii) diameters are equal

iii) chords are equal iv) segments are equal​

Answer 1

Answer:

The Coordination number of an atom in a given molecule or a crystal refers to the total number of atoms, ion, or molecules bonded to the atom in question. ‘Ligancy’ is another term used to refer to the coordination number of an atom.The Coordination number of an atom in a given molecule or a crystal refers to the total number of atoms, ion, or molecules bonded to the atom in question. ‘Ligancy’ is another term used to refer to the coordination number of an atom.

Answer 2

Answer: a) chord.

             b)45.

              c)90.

              d)minor sector.

              e)radii are equal.