12 12 18 36 90 270 ?

12 12 18 45 180 1170 ?

Write true of false. i) 15 : 30 :: 30 : 40, ii) 22 : 11 :: 12 : 6, iii) 90 : 30 :: 36 : 12, iv) 30 : 64 :: 6 : 12, v) 25 : 1 :: 40 : 160.

In Delta ABC , if r_1= 12 , r_2 = 18 , r_3 = 36 then the length of the altitude through A is

If r_1 = 36,r_2 = 18 r_3 = 12 then the area of Delta ABC is

If r_1 = 36 , r_2 = 18 and r_3 = 12 then prove that a= 30 , b= 24 , c = 18 and R = 15.

163. 12 : 90 : : 16 : ?

If x : 12 : : 12 : 18. then x is

In a !ABC if r_(1) = 36 , r_(2) = 18 and r_(3) = 12 , then the area of the triangle , in square units, is

Write the following sets using rule method : B = {6, 12, 18, 24, 30, 36, 42, 48}