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belka [17]
2 years ago
13

Find the area of a quarter circle with the radius of 6cm

Mathematics
1 answer:
Ronch [10]2 years ago
8 0

Answer:

28.27cm³

Step-by-step explanation:

Area of a circle:

A=\pi r^2

First, find the area of a full circle with this given radius:

\rightarrow A=(3.14159)(6)^2\\\rightarrow A=(3.14159)(36)\\\rightarrow A=113.09734\\

Now, to find the radius of a quarter circle with the same radius, just divide by 4:

\rightarrow A = \frac{113.09734}{4}\\\rightarrow A = 28.27433

The radius of the quarter circle is about 28.27cm³

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For functions f(x) = x + 2 and g(x) = 8x2 - 2x + 4,
adoni [48]

Answer:

Sorry im not ood at math so i cant help

Step-by-step explanation:

4 0
2 years ago
Find the angle between the given vectors to the nearest tenth of a degree. u = , v = (2 points)
Liono4ka [1.6K]

Answer:

<h2>3.6°</h2>

Step-by-step explanation:

The question is incomplete. Here is the complete question.

Find the angle between the given vectors to the nearest tenth of a degree.

u = <8, 7>, v = <9, 7>

we will be using the formula below to calculate the angle between the two vectors;

u*v = |u||v| cos \theta

\theta is the angle between the two vectors.

u = 8i + 7j and v = 9i+7j

u*v = (8i + 7j )*(9i + 7j )

u*v = 8(9) + 7(7)

u*v = 72+49

u*v = 121

|u| = √8²+7²

|u| = √64+49

|u| = √113

|v| = √9²+7²

|v| = √81+49

|v| = √130

Substituting the values into the formula;

121= √113*√130 cos θ

cos θ = 121/121.20

cos θ = 0.998

θ = cos⁻¹0.998

θ = 3.6° (to nearest tenth)

Hence, the angle between the given vectors is 3.6°

5 0
3 years ago
Write the following while number as it’s English word equivalent
ahrayia [7]

Answer:

eight hundred seventy-five thousand six hundred eighty-seven

<em>hope this helps :)</em>

8 0
2 years ago
Read 2 more answers
there are 3 times as many adults as children at a book fair what is the ratio of people at the book fair​
kakasveta [241]

Answer:

1:3

Step-by-step explanation:

There are 3 adults per 1 child at the book fair. I think this is right but im not 100% sure :)

3 0
2 years ago
1. If f(x) = 2x - 3, find the following:<br> a. f(-2) =<br> b. f(7) =<br> c. f(-4) =
Pavlova-9 [17]
A. 2(-2) - 3
-4 - 3
-7

b. 2(7) - 3
14 - 3
11

2(-4) - 3
-8 - 3
- 11
5 0
2 years ago
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