Question

At a particular time of a day ,7m high pole casts a shadow which is 8.2m long . what is the height of the building which casts a shadow 20.5 meter's in length at the same moment .​

Answer 1

Step-by-step explanation:

The height of the building which caste a shadow 20.5 m in length is 17.5 m.

Step-by-step explanation:

Given : At a particular time of a day, a 7 high flagstaff castes a shadow which is 8.2 m long.

To find : What is the height of the building which castes a shadow 20.5 meters in length at the same moment?

Solution :

A 7 high flagstaff castes a shadow which is 8.2 m long.

i.e. Shadow of length 8.2 m = 7 m

The shadow of length 1 m = \frac{7}{8.2}

8.2

7

m

The shadow of length 20.5 m = \frac{7}{8.2}\times 20.5

8.2

7

×20.5 m

The shadow of length 20.5 m = 17.5 m

Therefore, The height of the building which caste a shadow 20.5 m in length is 17.5 m.