URGENT WILL GIVE 10 PTS How do you find surface area and what is the formula for it?

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¯¯¯¯¯¯¯¯)?

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4