Answer:
Area: 
Step-by-step explanation:
Since all sides of a square have equal lengths, the area of the square is
(a = length of a side).
Since the length of the side of the square is given (is 3cm), the area of the square is
= 
Answer:125
Step-by-step explanation:
Answer:
271
9 percent (calculated percentage %) of what number equals 24.39? Answer: 271.
Step-by-step explanation:
A= (a+b)/2*h
A=(12+15)/2*5
A=(27/2)*5
A=13.5*5
A=67.5in