Question

if the perimeter of a semi circle is 216cm. find its radius in solution ​

Answer 1

Answer:

Hence the radius is 68.72 m

Step-by-step explanation:

68.72 m

Step-by-step explanation:

Circumference of Semicircle of circle = \frac{2 \pi r }{2}

2

2πr

Where r is the radius

We are given that the circumference of a semi circle is 216 mts

So, \frac{2 \pi r }{2}=216

2

2πr

=216

\pi r=216πr=216

\frac{22}{7}r=216

7

22

r=216

r=\frac{216}{\frac{22}{7}}r=

7

22

216

r=68.72r=68.72

Hence the radius is 68.72 m

There is your answer

Hope it helps you

Thank you

Answer 2

Answer:

216/π

Step-by-step explanation:

parameter of  circle = 2πr

so parameter of semi circle= πr

πr=216

r=216/π