Answer:
D) 408 in^2
Hopefully this helps!!
Answer: A=20
Step-by-step explanation:
3×A=30+30............eqn 1
3A=60
A=60/3
A=20
Substitute A=20 into equation 1
3x20= 30+30
1+2+3+4+5+6+7+8+9×2+14