Question

 In the given figure AB ∥ CD, area of triangle AOD = 4 cm2 and area of triangle BCD = 7 cm2 . Calculate
(i) area of triangle OCD
(ii) ratio of BO : OD
(iii) area of triangle Ovab​

Answer 1

Step-by-step explanation:

In the given figure:

Area of triangle ADC = Area of triangle BCD (Triangles on the same and parallel)

Now subtract the area of triangle DOC from both of them so...

(Area of triangle ADC - Area of triangle DOC) = (Area of triangle BCD - Area of triangle DOC)

=> Area of triangle AOD = Area of triangle BOC

Hence the area of triangle BOC is 30 cm square.