Question

HI MATES!!!!!!!!! pls answer this question!!!!!!!!​

Answer 1

ASD forms equilateral triangle

Its equilateral so circumcentre coincide with centroid

AO = 20

O( centroid) divides median in 2:1

Let mid point of SD be E

OE = 20/2 = 10

So AE = 30

AS =a

√a^2 - a^2/4 = 30

a^2 - a^2/4 = 900

3 a^2/4 = 900

a^2/4 = 300

a^2 = 1200

a= 20√3

so length of string = 20√3

Answer 2

Hope it helps you.......