A point O is at a distance  of 10 cm from the  centre  of a circle  of radius 6 cm. How many tangents can be  drawn from point O to the  circle ?

1) 1 
2) 3
3) infinite
4) 2

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  % 

 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

From the  given figure , find out what is AC : AB.

1) 2 : 3 
2) 5 : 3
3) 3 : 2
4) 3 : 5

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