Need with understanding the hardy-weinberg principle:

a hypothetical population of 200 cats has two alleles, tl and ts, for a locus that codes for tail length. there are 60 cats with long tails (tltl genotype), 40 with medium (tlts genotype), and 100 with short tails (tsts genotype).
according to the answers, in the entire cat population, 60% of the alleles are ts. why is it so?
i tried solving it and i got 71%, here's how:
100/200=0.5
√(0.5)=0.7071 ~ 0.71
0.71*100=71%

where's the mistake?

The structure that houses the cells genetic information.

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.