Please hep me with this question. Thanks!

1 + 2 + x 7 + 2?

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 the value. a. 0.003 b. 0.03 c. 0.3 d. 3

Which statements are true about additional information for proving that the triangles are congruent check all that apply