Answer: 29 cows
Step-by-step explanation:
First we need to know how many pieces of meat will be needed. But before that, we need to know how many hours are in these 30 days. 24 hours per day so, 30*24=720 hours. 720 hours and 4 pieces of meat per 10 of those hours. We can do 720/10=72, then, 72*4=288. That means we need 288 pieces of meat, if each cow gives you ten, then we can round 288 to the nearest ten which is 290, then, 290/10 is 29. This means that Dumbledore needs 29 whole cows.
<em>(Yer a wizard Harry)</em>
Pascal triangles gives us the coefficients for an expanded binomial of the form (a+b)n,where n is now the row of the triangle..
C=pid
d=diameter
d=4
C=4pi
tada
if you want
aprox pi=3.14
C=12.56 units
Taking the derivative of both sides with respect to gives
When , we have two possible values of :
so we have two possible values .
75 in^2, because 5 times 5 (the split up hexagons make parallelograms and there is 3 of them, and parallelogram area is base times height.)