Answer:
8 π .
Step-by-step explanation:
radius increases at a constant rate of 1 in/sec.
dr / dt = 1
where r is radius .
radius after 4 sec
r = 1 x 4 = 4 in
area A = π r²
differentiating both sides
dA / dt = 2 π r dr / dt
Putting dr / dt = 1 , r = 4 in
dA / dt = 2 π x 4 x 1
= 8 π sq in per sec.
Area increases at the rate of 8 π per sec.
Answer:
$39.6
Step-by-step explanation:
5.5 times 7.20 = $39.6
Answer:
1 out of 3
Step-by-step explanation:
The answere is 24 ways ( 4 × 3 × 2)
Answer:
I think it b
Step-by-step explanation:
THANK YOU
