3 years ago

The radius of a semicircle is 1 kilometer. what is the semicircle's perimeter? use 3.14 for pie.

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

5 0

Answer:

5.14 km

Step-by-step explanation:

A semicircle is 1/2 of a circle so the perimeter is just 1/2 of the circumference

C = 2 * pi r for a circle so for a semicircle

1/2* 2* pi *r

pi*r

3.14 * 1

3.14

If we want to include the piece that closes the semicircle, we need to add the diameter

d = 2r = 2(1) = 2

2+3.14 = 5.14

You might be interested in

Which statment descirbes the soloution to a equation<br> a+5(2a-1)+3=11a-2

Andreyy89

Answer:

Any real number.

Step-by-step explanation:

I dunno what you're asking, but Im assuming you need what a equals to.

$a+5(2a-1)+3=11a-2\\a+10a-5+3=11a-2\\11a-2=11a-2\\$

The answer is any real number.

7 0

3 years ago

The mass of the Sun is about 2 × 1027 metric tons, or 2 × 1030 kilograms. How many kilograms are in one metric ton?

Yuri [45]

One metric ton is equal to 1000 Kilograms

3 0

3 years ago

Values for the area A of the rectangle shown are 30 SA < 60. Write and solve

Maurinko [17]

Answer:

Nothing further can be done with this topic. Please check the expression entered or try another topic.

Step-by-step explanation:

5X + 3

6 0

3 years ago

What is the value of x?

STatiana [176]

I thought it was 5 because the 55 degrees given is equal to the angle above it. If you look, there are 4, 90 degree angles so the 8x-5 has to equal 35 to make 90 but idk

3 0

3 years ago

HELP FAST!!

katrin2010 [14]

I got b I think that’s the answer

3 0

3 years ago