4 years ago

If the perimeter of the semicircle is 10.28mm. What is the semicircles radius?

1 answer:

6 0

The formula for a circle’s circumference (circle’s unique perimeter) is pi * diameter.

However, since we have a semicircle (half of the circle), our formula would 1/2 * pi * diameter, or just pi * radius.

Set up an equation and solve.

10.28 = pi * radius.

r = (10.28)/pi

You might be interested in

1.The diameter of a circle is 20m. Find the circumference to the nearest tenth

Temka [501]

Answer:

62.8

Step-by-step explanation:

The formula for circumference is 2(pi)r

Let's plug in the values.

Well, we know the diameter, and since the radius is 1/2 the diameter, but then you multiply by 2 again, you don't have to change anything. Therefore, another formula is (pi)d

3.14 x 20

= 62.8 is your answer. And the answer is already rounded to the nearest tenth, so nothing is left to do!

Hope this helps!

3 0

3 years ago

7176 rounded to 1 significant figure

kati45 [8]

Answer:

7000

Step-by-step explanation:

8 0

3 years ago

Find each rate and unit rate 420 miles in 7 hours

Anon25 [30]

the unit rate is 60 mph

4 0

3 years ago

-32=2(x2 + 10x) what are the steps to solve this

Marysya12 [62]

Answer:

idk reeeeeeeeee

Step-by-step explanation:

idkreeeeeeeeee

4 0

3 years ago

Read 2 more answers

Please help I will give brainliest

valkas [14]

Answer:

choose A

Step-by-step explanation:

f6odo6d7pfp7dp6d6p

7 0

3 years ago