The diameter of a semicircle is 8 miles. What is the semicircle's perimeter? Use 3.14 for .

Mathematics

2 answers:

deff fn [24]2 years ago

8 0

Answer:

Circumference of the semicircle $=12.56 miles$

Step-by-step explanation:

Diameter of the semicircle= $8 miles$

Radius of the semicircle= $8/2=4 miles$

Perimeter of a circle or semicircle is called its Circumference:

Circumference of a circle= $2*\pi *r$

Circumference of a semicircle= $\frac{2*\pi *r}{2}=\pi *r$

As, $\pi =\frac{22}{7}=3.14$

Putting the values in the formula of the circumference of the semicircle:

Circumference of the semicircle= $3.14*4$

$=12.56 miles$

The Circumference of the semicircle with the radius of 4 miles $=12.56 miles$

wlad13 [49]2 years ago

7 0

Answer:

41.13 cm

Step-by-step explanation:

ITSSSS RIGHTTTTTTTTT

You might be interested in

An easier question all wrong or unhelpful or no-work answers will be reported.

ipn [44]

Elimination:

3x - 9y = 3
6x - 3y = -24

3x - 9y = 3
18x - 9y = -72
(subtract)
-15x = 75
÷ -15
x = -5

(3 × -5) - 9y = 3
-15 - 9y = 3
+ 15
-9y = 18
÷ -9
y = -2

Substitution:

6x - 3y = -24
+ 3y
6x = -24 + 3y

÷ 6
x = 4 + 0.5y

3(4 + 0.5y) - 9y = 3
12 + 1.5y - 9y = 3
12 - 7.5y = 3
- 12
-7.5y = -9
÷ -7.5
y = 1.2

x = 4 + (0.5 × 1.2)
x = 4 + 0.6
x = 4.6

So this one didn't fail as much, but I got different numbers. If you have to give in values, I'd give in the values from the elimination because I don't trust myself when it comes to the substitution

4 0

2 years ago

Find a solution to the linear equation-2x-2y=8 by filling in the boxes with a valid value of x and y

Marina86 [1]

Step-by-step explanation:

If you want the "root" of the equation...

First get y by itself on one side. You should get y = - x - 8.

Notice that this is the equation of a straight line.

Then let y = 0, and solve for x. You should get x = -8.

So the solution or "root" of the equation is at the point (-8,0)

6 0

2 years ago