The length of the sides of ∆ABC are consecutive integers. If ∆ABC has the same perimeter as an equilateral triangle with a side of length 9cm, what is the length of the shor test side of ∆ABC? 

1) 8 
2) 6
3) 4
4) 10 

 In the  given figure , triangle s ABC and DEF are  similar. The  are a of triangle  ABC is 9 sq. cm and the  are a of triangle  DEF is 16 sq. cm. If BC = 2.1 cm find the  length of EF.

1) 4.9 cm 
2) 6.8 cm
3) 2.8 cm
4) 9.4 cm

If every side of a triangle is doubled, then increase in the area of the triangle is 

1) 100Ö2 % 
2) 200  %
3) 300  %
4) 400  % 

A square and an equilateral triangle have equal perimeters. If the diagonal of the square is 1272 cm, then area of the triangle is 

1) 24Ö2  cm² 
2) 24Ö3 cm²
3) 48Ö3  cm²
4) 64Ö3  cm²

. In the  given figure , triangle  ABC has be enconstructed similar to triangle  A’BC’. What is the scale  factor?

1) 3 / 2 
2) 5 / 4
3) 2 / 3
4) 4 / 3