Answer:
87.92
Step-by-step explanation:
3.14(a²+ab)=
<em>Plugging in values for a and b</em>
3.14(4²+4×3)=
3.14(16+12)=
3.14(28)=
87.92
Answer:

Step-by-step explanation:
ok so first you want to find a common factor. For instance, 3. So divide the numerator and denominator by 3. This will give you the fraction of
.