All categories

3 years ago

Find the area of a circle with radius, r = 8cm. Give your answer in terms of π .

Mathematics

2 answers:

olchik [2.2K]3 years ago

8 0

Answer:

Step-by-step explanation:

<h3>to understand this </h3><h3>you need to know about</h3>

circle
algebra
area of circle=πr²

where r means redious

given

r=8cm

using the formula πr²

the area of the circle Is

π×8² cm² (as redious =8)

π×64

therefore

64π (in terms of π)

Leto [7]3 years ago

7 0

Answer:

64π

Step-by-step explanation:

to find the area of a circle use the following formula

πr²

That means we have π8²

which will simplify into 64π

You might be interested in

Simplify the expression (62)4.

BARSIC [14]

Answer:

(31)2 is the answer to (62)4

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Roger the park ranger was standing in a look out tower that was 200 ft tall. Looks down, sees a fire. Angle of depression is 7 d

Ainat [17]

Answer:

approx. 24.6 ft

Step-by-step explanation:

x=the distance of the fire from the base of the tower

200ft=the height of the tower

7 degrees=the angle of depression

Using these values you can draw a diagram that highlights that you need to use trig. to work out the answer.

Using Tan:

Tan 7=x/200 ft

multiply both sides by 200 ft

200*tan 7=24.55691218

approx. 24.6 ft

8 0

2 years ago

Solve and graph and plot this on the line

alexira [117]

X less than or equal to (< with the line underneath) -3 or x>0

7 0

2 years ago

I already made an attempt at this question and I would just like to check my answer z = ?

Salsk061 [2.6K]

So we have the equation:

$\frac{z+9}{4}=2.1$

Then we need to multiply by 4 on both sides to get rid of the denominator on the left:

$z+9=8.4$

Then we subtract 9 on both sides to solve for z:

$z=-0.6$

Therefore the answer is z = -0.6.

5 0

3 years ago

Which number line shows the solution to 1/4 + 1 < 5

alexira [117]

Answer:

The second line is the answer.

3 0

2 years ago