Question

5: At a particular time of a day, a 7m high flagstaff casts a shadow which is 8.2 m long. What is
the height of the building which casts a shadow 20.5 meters in length at the same moment?​

Answer 1

Answer:

Let

X1 = 7m

Y1 = 8.2 m

X2 =?

Y2 = 20.5

X1 / Y1 = X2 /Y2

7/8.2 = X2/20.5

8.2 X2 = 7 x 20.5

X2 = 143.5/8.2 = 17.5

Hence height of the building = 17.5 m

Answer 2

Answer:

A 7 high flagstaff castes a shadow which is 8.2 m long. Therefore, The height of the building which caste a shadow 20.5 m in length is 17.5 m.