$640 in interest after 6 months
$8,640 is the balance after six months
Step-by-step explanation:

π×4×4×8/3
π×16×8/3
128/3×π
128/3π cm²
Answer:
75%
Step-by-step explanation:
Answer:
{π/4, 5π/4}
Step-by-step explanation:
Tan theta -1=0 could be rewritten as tan Ф = 1. The tangent function is 1 at Ф = π/4. As the period of the tangent function is π,
tan Ф = 1 will be true for Ф = π/4 + π, or (5/4)π.
The solution set is {π/4, 5π/4}.