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mr_godi [17]
2 years ago
12

What is the area of a circle with a Radius of 4 and a Diameter of 2? (Its on Khan)

Mathematics
1 answer:
algol132 years ago
7 0

Answer:4^2≈50.26548

Step-by-step explanation:

   πr2.

   Where r is the radius and π≈3.14 , the ratio of a circle's circumference to    its diameter.

   Plugging in 4 from the radius, we get.

   42π

   ⇒16π inches.

   This is our exact answer. Alternatively, we can plug in 3.14 for π to get.

   50.26 inches.

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28. How much plain yogurt will you need to make 2 1/2 dozen cookies? Show your work.
xxMikexx [17]

Answer:

\frac{5}{6} cups

Step-by-step explanation:

Normally, when working with mixed numbers, I would prefer to turn them into improper fractions first before evaluating.

1 \frac{1}{2} cookies --- \frac{1}{2} cup plain yogurt

\frac{3}{2} cookies --- \frac{1}{2} cup plain yogurt

2\frac{1}{2} cookies --- ? cup plain yogurt

\frac{5}{2} cookies --- \frac{5}{3} × \frac{1}{2} cup plain yogurt = \frac{5}{6} cups plain yogurt

5 0
3 years ago
A family went out to eat. Below is the number of coen dogs tbat each of the four people ate. Find the mean absolute deviation (m
Alexxandr [17]

Answer:

1.25

Step-by-step explanation:

Give the data:

X : 1 1/2 ___ 0 _____ 4 ______ 2 1/2

Mean absolute deviation (MAD) :

Σ|x - xbar| ÷ n

xbar = Σx/ n

Σx = (1 1/2 + 0 + 4 + 2 1/2) = 8

xbar = 8/4 = 2

|x - xbar| :

|1 1/2 - 2|= 1/2

|0 - 2| = 2

|4 - 2| = 2

|2 1/2 - 2| = 1/2

Therefore,

MAD = (1/2 + 2 + 2 + 1/2) / n

MAD = 5/4

MAD = 1.25

4 0
3 years ago
I need help with my statistics class. I am doing a 6 step hypothesis and i am stuck on the alternate and null hypothesis. I am d
mash [69]

What do you need help with?

8 0
3 years ago
Mcm de 12 21 63 <br> Encontrar el resultado
emmasim [6.3K]

Answer:

Lo mcm es 252.

Step-by-step explanation:

El objetivo de esta queston es encontrar el mínimo multiplo comun de estes tres numeros.

Para eso, factoramos estes numeros en valores primos, e despues multiplicamos estos factores.

12 21 63

12 - 21 - 63|2

6 - 21 - 63|2

3 - 21 - 63|3

1 - 7 - 21|3

1 - 7 - 7|7

1 - 1 - 1

2*2*3*3*7 = 252

Lo mcm es 252.

6 0
3 years ago
How many times greater is 1 gallon than one quart
serg [7]
Well, I know that there are 4 quarts in 1 gallon so the 1 gallon is 4 times greater than the 1 quart. 

I hope this helps :)


4 0
4 years ago
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