One day Rahul decided to measure the height of the building in his locality. He is 5 feet tall. He places a mirror on the ground and moves until he can see the top of the building. At the instant when Rahul is 2 feet from the mirror, the building is 48 feet from the mirror.
Find
1. The Height of the building. (A.120, B.96, C.40, D.180)
Asked by bassichtmlpage | 26th Mar, 2021, 10:18: AM
Expert Answer:
Let h be the height of the building.
Clearly, the two triangles formed are similar.
So, the sides will be proportional.
Therefore,
48/2 = h/5
i.e. h = 24 x 5 = 120 m
Answered by Renu Varma | 26th Mar, 2021, 10:33: AM
Concept Videos
- A right circular cone is divide by a plane parallel to its base into two equal volume.In what ratio the height of the cone be devided by the plane?
- If triangle abc and triangle dbc are on the same base bc with ab=dc and ac=db, then state the one to one correspondence between the vertices. Pls ans this question
- If the areas of two similar triangles, ∆PQR and ∆XYZ are 162sq.cm and 200sq.cm respectively. Find the ratio of their perimeters.
- Please solve this question
- Given two triangles ABC and DEF with
,
.Are the two triangles similar ? If yes, by which rule? Explain
- Given two triangles PQR and MNS with
. Are the two triangles RPQ and MNS similar ? If yes, by which rule? Explain your Answer..
- Given a triangle and a trapezium as shown in the figure such that Area(trapezium) = 15(Area(triangle)).Find the ratio of the
.
- Given triangle ABC with BE and DC as perpendiculars to AC and AB respectively. Prove that
.
Given that AB = 6 cm,PQ = 7 cm 
, 
= ?
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change