All categories

3 years ago

How do you know when to find area or circumference

Mathematics

1 answer:

const2013 [10]3 years ago

5 0

Hello there,

To find the area of a circle you use an equation:

A = πr²

For the circumference you use:

C = 2πr

These two equations would help you find the area as well as the circumference of a circle.

Hope I helped,

Amna

You might be interested in

Given sin A = 12/13 and that angle A is in Quadrant 1,

UkoKoshka [18]

We have been given that $\text{sin}(A)=\frac{12}{13}$ and angle A is in quadrant 1. We are asked to find the exact value of $\text{cot}(A)$ in simplest radical form.

We know that sine relates opposite side of right triangle with hypotenuse.

$\text{sin}=\frac{\text{Opposite}}{\text{Hypotenuse}}$

This means that opposite side is 12 units and hypotenuse is 13 units.

We know that cotangent relates adjacent side of right triangle with adjacent side.

$\text{cot}=\frac{\text{Adjacent}}{\text{Opposite}}$

Now we will find adjacent side using Pythagoras theorem as:

$\text{Adjacent}^2=\text{Hypotenuse}^2-\text{Oppoiste}^2$

$\text{Adjacent}^2=13^2-12^2$

$\text{Adjacent}^2=169-144$

$\text{Adjacent}^2=25$

Let us take positive square root on both sides:

$\sqrt{\text{Adjacent}^2}=\sqrt{25}$

$\text{Adjacent}=5$

Therefore, adjacent side of angle A is 5 units.

$\text{cot}(A)=\frac{5}{12}$

Therefore, the exact value of cot A is $\frac{5}{12}$ .

5 0

2 years ago

Hi i would like sum help :)) please help for a brainlist !!!!!!!!!!!!!

Sergio [31]

A. all real numbers for both

Explanation:
Domain is the x-values. Since the graph goes forever horizontally, any x-value is on the graph.
Range is the same but with y-values. If the graph went on further than what the picture shows, then it also would show that every y value is on the graph
hope this helps

5 0

3 years ago

Which line has an equation of Y= -5x+4 in slope-intercept form?

Delvig [45]

Answer:

The line passing through the points (2, -14) and (4, -24)

Step-by-step explanation:

5 0

3 years ago

Determine the value of x.

stellarik [79]

It is B 4.4
Because of 2.2 is the first one and the second one should be 4.4 so it B. 4.4

3 0

2 years ago

Simplify 7(exponent 6) multiplied by 7 (exponent 5)

Lady_Fox [76]

7(6) x 7(5) = 7(6+5) = 7(11) is the simplified answer.
Thank you!

7 0

3 years ago