Answer:
SSS postulate because three sides of a triangle are are congruent
Answer:
a) 
b) 
Step-by-step explanation:
Use logarithm properties:

Then
a) 
b) 
Step-by-step explanation:
Here are four steps to help solve any math problems easily:
Read carefully, understand, and identify the type of problem. ...
Draw and review your problem. ...
Develop the plan to solve it. ...
Solve the problem.
The area of the rectangle should be 87.1cm^2