What is the length of the unknown leg in the right triangle? 8 cm 16 cm 20 cm 40 cm

From which of the following literary works is this quotation most likely taken?

Kublai khan honored his mongol heritage by: a)marring only one wife b)praying facing mecca five times a day c)slaughtering ten chinese officials every year d)building a large enclosed hunting ground at shangdu, his summer palace

Which south american patriot of lrish descent became the leader of newly independent chile