All categories

2 years ago

Use the circumference of 18.84 to find the radius. Use the radius to find the area of the circle.

Mathematics

1 answer:

lora16 [44]2 years ago

4 0

Answer:

9.42

Step-by-step explanation:

The radius is always half of the circumference. So u would do 18.84 divided by 2.

You might be interested in

Define supplementary angles

Alex17521 [72]

Answer:

angels that are 180 degrees

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Anthony is now designing the classroom layout for the school. Each hallway has exactly 5 classrooms. If Anthony has 48 classes t

cluponka [151]

Answer:

9 and a half

Step-by-step explanation:

the fewest number is 9.5 because thats the exact amount in hallways that he needs

4 0

2 years ago

Read 2 more answers

Simplify each expression<br> (e^2) (g) (g^4) (e^3)<br> (e)( e^2) (e)

poizon [28]

Answer:

(e^2) (g) (g^4) (e^3)=e^b

(e)( e^2) (e)=ve^4

Step-by-step explanation:

4 0

2 years ago

A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of t

Makovka662 [10]

Answer:

132.233 ft2

Step-by-step explanation:

Let's call the width of the rectangle 'w' and the length 'x'. So the area of the semicircle is:

$A_1 = \pi*radius^2/2$

$A_1 = \pi*(w/2)^2/2$

$A_1 = \pi/8*w^2$

And the area of the rectangle is:

$A_2 = w*x$

If the perimeter of the window is 41 feet, we have:

$Perimeter = length + 2*width + \pi*radius$

$41 = x + 2*w + \pi*w/2$

$x = 41 - w(2 + \pi/2)$

Now, the equation for the total area of the window is:

$A = A_1 + A_2 = \pi/8*w^2 + w*x$

$A = \pi/8*w^2 + w*(41 - w(2 + \pi/2))$

$A = (\pi/8-2 - \pi/2)*w^2 + 41w = -3.1781w^2 + 41w$

To find the maximum area, we can find the x-coordinate of the vertex of the quadratic equation:

$x\_vertex = -b / 2a = -41 / (-3.1781*2) = 6.45$

So the width that gives us the maximum area of the window is 6.45 feet, and the area will be:

$A = -3.1781w^2 + 41w = -3.1781*(6.45)^2 + 41*6.45 = 132.233\ ft^2$

3 0

2 years ago

The lenght of the square-shaped field edge is 240 meters. Calculatr the field area in hectares

Katena32 [7]

Answer:

5.76 hectares

Step-by-step explanation:

Area = 240 meters × 240 meters

Area = 57600 meter square

Convert to hectares by dividing 10.000

Area = 5.76 hectares

I hope this helps you :)

6 0

3 years ago