All categories

3 years ago

The radius of a circle is 3 centimeters. What is the circle's area? Use 3.14 for

Mathematics

2 answers:

fomenos3 years ago

7 0

Answer:

≈28.27

Step-by-step explanation:

The equation for the radius of circle - A=π $r^{2}$

plug in numbers - A=π* 3

≈28.27

Dominik [7]3 years ago

5 0

Answer:

28.26 square centimeters

Step-by-step explanation:

The area of a circle is pi*r^2, with pi=3.14.

3.14*3^2=28.26 square centimeters.

You might be interested in

What's the distance between points (2, 2) and (4.1)

Tresset [83]

Answer:

-(1/2)

Step-by-step explanation:

y1-y2/x1-x2

8 0

3 years ago

In ADEF, the measure of ZF=90°, EF = 2.3 feet, and FD = 2.9 feet. Find the measure

neonofarm [45]

Answer:38.4

Step-by-step explanation:

5 0

3 years ago

PU 15 cm<br> 0<br> 162<br> 1. Find the arc length of PQR.

Ad libitum [116K]

It isn’t really clear to me it’s confusing

4 0

3 years ago

Cassie has test grades of 62, 85 and 89 on the first three tests in herpre-algebra class. What are the possible scores she can m

Vsevolod [243]

Explanation:

The test grade for 1st three tests = 62, 85, 89

Let the fourth test score = x

The result we hoping to get is grade B.

Let's find the average of the four test score

$\text{Average = }\frac{Su\text{ m of all test score}}{nu\text{mber of test score}}$ $\begin{gathered} s\text{ um of test scores = 62 + 85 + 89 + x} \\ nu\text{mber of test score = 4} \\ \frac{\text{62 + 85 + 89 + x}}{4}=\text{ Average} \end{gathered}$ $\begin{gathered} A\text{ grade B represents atleast 80} \\ \text{Atleast represents }\ge \\ \frac{\text{62 + 85 + 89 + x}}{4}\text{ }\ge\text{ 80} \\ \frac{\text{236 + x}}{4}\text{ }\ge\text{ 80} \end{gathered}$ $\begin{gathered} \text{236 + x }\ge\text{ }80(4) \\ \text{236 + x }\ge\text{ }320 \\ \text{subtract }236\text{ from both sides:} \\ 236\text{ - 236 + x }\ge\text{ }320\text{ - 23}6 \\ x\text{ }\ge\text{ 84} \end{gathered}$

This means Cassie needs to score 84 or more to get a grade of B

In ineq

3 0

1 year ago

Lowest common multiple of 8 and 56

Gnom [1K]

LCM would have to be 2 I think

6 0

3 years ago