Question

Math 170

on a photograph of a triangular piece of land, the lenghts of the three sides are 12cm, 15cm, and 21 cm respectively. The shortest side of the actual piece of land is 200m long. Find the lenghts of the other two sides.

15cm in the photograph is [ ] m long

21cm in the photograph is [ ] long

please help me :(

Answer 1

The given sides are 12 cm, 15 cm and 21 cm

Shortest side is 12 cm

As given that in real the shortest side is 200 m

So 12 cm=200 m

then 1 cm =
`(200)/(12)=(50)/(3)`

Hence 15 cm =
`(50)/(3) * 15 = 250` m

21 cm =
`(50)/(3) * 21 = 350` m

So,,

15 cm in the photograph is 250 m long .

21 cm in the photograph is 350 long.