The answer is 5.4 × 10^-4
Answer:

Step-by-step explanation:
Start with:

Combine like terms:

Answer:

Step-by-step explanation:
Given



Required
Solve for A
Simply substitute 18 for b and 30 for h



Hence:
The area is

Answer:
2) 70,000
Step-by-step explanation:
since they have said estimate meaning frist round off
679 rounds up to 700 and 98 rounds up to 100
700×100
70000