What is the area of this circle? Show work please. The number in the circle is 3.

Mathematics

1 answer:

barxatty [35]3 years ago

7 0

The area of the circle is about 28.26

Area of circle= pi(radius squared)

3 squared = 9

9 x pi (3.14) = 28.26

Or 28.26 if you’re using the unrounded version of pi

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PLEASE HELP!!

beks73 [17]

<span>Let x = the width
:
It says,"The length of a rectangle is 4 less than 3 times the width." write that as:
L = 3x - 4
:
If the perimeter is 40, find the dimensions of the rectangle.
:
We know: 2L + 2W = 40
:
Substitute (3x-4) for L and x for W
2(3x-4) + 2x = 40
:
6x - 8 + 2x = 40; Multiplied what's inside the brackets
:
6x + 2x = 40 + 8; do some basic algebra to find x; (added 8 to both sides)

:
8x = 48
:
x = 48/8
:
x = 6 which is the width
:
It said that L = 3x - 4, therefore:
L = 3(6) - 4
L = 18 - 4
L = 14; is the length
:
Check our solutions in the perimeter:
2(14) + 2(6) =
28 + 12 = 40</span>

8 0

3 years ago

Read 2 more answers

Saved Suppose that the population of deer in a state is 1,500 and is growing 2% each year. Predict the population after 4 years.

mestny [16]

<h2>Steps</h2>

So for this, we will be creating an equation using the exponential formula - which is $y=ab^x$ (a = initial value, b = growth/decay).

Firstly, we know that the original population of the deer is 1,500 so that will be our a value.

Next, we know that the population is growing by 2% annually. With this, we will <em>add</em> 1 and 0.02 (2% in decimal form) since the population is <em>increasing</em>.