In the given figure `A B` is the diameter of the circle, centred at `Odot` If `/_C O A=60^0,A B=2r ,A C=d ,` and `C D=l` , then l is equal to `dsqrt(3)` (b) `d//sqrt(3)` `3d` (d) `sqrt(3)` d /2

If the area of a rectangle is sqrt(3)backslash d^(2), where 2d is the length of its diagonal,then its perimeter is equal to 4sqrt(3)d(b)2sqrt(3)d(c)4(sqrt(3)+1)d(d)2(sqrt(3)+1)d

If A, B, C and D are four numbers such that A : B = 2 : 3, B : C = 4 : 5, C : D = 5 : 8, then A : D is equal to

If a+1=b+2=c+3=d+4=a+b+c+d+5, then (a+b+c+d) is equal to

sqrt(8-2sqrt(15)) is equal to 3-sqrt(5)b*sqrt(5)-sqrt(3) c.5-sqrt(3)d.sqrt(5)+sqrt(3)

If A, B, C and D are four numbers such that A:B=2:3,B:C=4:5,C:D=5:8 , then A:D is equal to

Let aandb represent the lengths of a right triangles legs.If d is the diameter of a circle inscribed into the triangle,and D is the diameter of a circle circumscribed on the triangle,the d+D equals.(a)a + b (b) 2(a+b)(c)(1)/(2)(a+b)( d) sqrt(a^(2)+b^(2))

The value of (sqrt(8))^(1/3) a.2 b.8 c.4 d.sqrt(2)

If a= 2b/3, b= 2c/3, and c=2d/3, then find the ratio of b and d:

If A : B = 1 : 2, B : C = 3 : 4, C : D = 2 : 3 and D : E = 3 : 4, then what is B : E equal to ?

If A B , B C a n d C D are equal chords of a circle with O as centre and A D diameter, then /_A O B= 60^0 (b) 90^0 (c) 120^0 (d) none of these