Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • A 5 m 60 cm high vertical pole casts a shadow 3 m 20 cm long. Find at the same time (i) the length of the shadow cast by another pole 10 m 50 cm high (ii) the height of a pole which casts a shadow 5m long.

Q9. A 5 m 60 cm high vertical pole casts a shadow 3 m 20 cm long. Find at the same time

(i) the length of the shadow cast by another pole 10 m 50 cm high

(ii) the height of a pole which casts a shadow 5m long.

 

Answers (1)

best_answer

Consider there is a direct proportion relation of pole height with pole shadow.

So we have  5m 60cm high verticle pole that casts a shadow of 3m 20cm long .

hence,

(i) for the length of the shadow cast by another pole of 10 m 50cm high would be 'x' cm;

\frac{560cm}{320cm}=\frac{1050cm}{x}

finding x from the equation we get;

x=600cm.

Therefore for a 10m 50cm pole we would get a shadow of 600cm or 6m length.

(ii) The height of a pole which casts a shadow of 5m long let it be 'y'

similar relation holds here also, so we can apply it once more

\frac{560cm}{320cm}=\frac{y}{500cm},

we get  y=875cm\ or\ 8m\ 75cm.

Thus, the height of a pole which casts a shadow of 5m long is 8m 75cm.

Posted by

Divya Prakash Singh

View full answer

Similar Questions

Trending Articles/News

anam-khan

JNVST 2024: NVS Class 6, 9 results out; documents required for admission
anam-khan

JNVST Class 6, 9 result 2024 likely tomorrow at navodaya.gov.in; cut-off marks, total seats
anam-khan

Navodaya Class 9 results 2024 likely by end of March; expected cut-offs

Latest Question