Question

Please help in this question :

Calculate the area of the shaded region

Answer 1

Is the 15 the length from BC?

Answer 2

Ok so this is an easy question but my problem is that :how do I find the area of triangle AOD

Answer 3

Yes denebel

Answer 4

AOD isn't a triangle ....is it?
u meant ACD?

Answer 5

OH i meant triangle OBD

Answer 6

isn't BO perpendicular to AD ?

Answer 7

NOTE : I have solution but the answer given by the soln is totally wrong acc. to me

I know that hartnn but... the soln does not go through that step

Answer 8

it only goes find area of triangle AOB and then area of triangle ABC

and then subtraction as u know

Answer 9

Is that right step?

Answer 10

u mean Area of ABC-ABD ?

Answer 11

ar of ABC - ar ABO

Answer 12

that is mentioned by : the book

and i think where does BOD go ..

Answer 13

thats not correct to find area ADC
it must be ABC-ABD=ABC-ABO-BOD

Answer 14

yes very right ... but the book was 'reliable' so I thought it may contain some trick

so either figure is wrong or the soln

right?

Answer 15

yup, either of the two is incorrect.

Answer 16

ok thankss