Please help me, I need all of the answers besides number 8. I'll give Brainliest, 5 star, and a like. This is for nidterm, so please, please help me out.

John bought 2 horses at rs 20000 each

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.