Jill is playing cards with her friend when she draws a card from a
pack of 20 cards numbered from 1 to 20. what is the probability
of drawing a number that is square?

40 x 50 = 2000

step-by-step explanation:

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft