CBSE Class 10 Maths Triangles
 the perimeter of two similar triangles are 25cm and 15cm respectively. if one side of the first triangle is 9cm,what is the corresponding side of the other triangle

Question is in image
 Ta^2 30+cot^2 30 =10/3 is this true or false

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)
 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..