The area of a parallelogram is 243sq m and its altitude is three times the corresponding base. What is the length of the base?
Choose the correct answer:
A) 4
B) 9
C) 10
D) 4
E) 12
3x * x = 243 =&gt; x   = 9   Answer: 9
<result>B</result>
The area of a parallelogram is 243sq m and its altitude is three times the corresponding base. What is the length of the base?