Question

the perimeter of a semicircle diameter 10m

Answer 1

Answer:

Okay, you will need to know these two formulas to solve:

A

=

π

r

2

and  

C

=

2

π

r

,

where  

A

is the area of the circle,  

C

is the circumference (or perimeter), and  

r

is the radius.

Also,  

d

=

2

r

, where d is diameter.

Now, plug in  

10

cm (the diameter) into this equation to find the radius of the given circle (as  

d

).

d

=

2

r

(

10

)

=

2

r

r

=

5

cm

Now, you can use the radius that you found and the first two equations that I mentioned to find the area and perimeter of the circle.

Step-by-step explanation:

hope it helps:)