Question

circle question

Answer 1

Four identical circles, each with radius of 110 units, are joined to make a set as shown. should all be same size but yeah

Answer 2

four such sets are used to make a design. A shaded circle is placed in centre so that it just touches the four inner circles as shown.

Answer 3

one sec i get pic

Answer 4

what is the radius of the shaded circle? to the nearest unit

Answer 5

join the centres to form a quadrilateral and its diagonals

Answer 6

which quadrilateral will it form ?

Answer 7

um square??

Answer 8

was that a guess?
or u have good reason to tell its a square ?

Answer 9

do u mean join centre of four circle around shaded circle ?

Answer 10

no, all outer circles

Answer 11

hm it forms parallelogram

Answer 12

are all sides equal ?

Answer 13

yes

Answer 14

then its a rhombus, isn't it ?

Answer 15

and what are the properties of diagonals of rhombus ?

Answer 16

whats difference between rhombus and parallelogram?

Answer 17

i mean square with 2 opposite sides but not right angle

Answer 18

a parallelogram does not have all sides equal

Answer 19

ah do u find length of diagonal and -4diameter

Answer 20

yeah i meant that.. like twisted square

Answer 21

im nto sure about properties of diagnal

Answer 22

length of diag - 3dia
or u can use pythagoras theorem

Answer 23

for rhombus, diagonals are perpendicular bisectors of each other

Answer 24

wait so how to find length of diagonal?

Answer 25

i would use pythagoras theorem anyways , u have hypotenuse as 3diameter, can u see that ?

Answer 26

and other 2 sides equal

Answer 27

which part of the set are you finding? liek how are you cuting??

Answer 28

oh i think i got it

Answer 29

should i draw it ?

Answer 30

yeah?