Answer:
Area = 1,527 in
Step-by-step explanation:
Circle area = π * r² = π * 3136 [cm²] ≈ 1527 [in²]
π ≈ 3.14159265 ≈ 3.14
d = r * 2 = 56 [cm] * 2 = 44.094 [inch]
Answer:
$77.18
Step-by-step explanation:
A = total amount
P = principal
I = interest
A = P(1 + r/n)^n·t
A = 70(1+.05)²
A = 70(1.05)²
A = 77.175
I = A - P
By moving the signs he actually changed the number itself. He changed -6 from a negative to a positive and 5 from a positive to a negative. Both equations give different answers.
Hopefully this helps :)
