Question

answer this question if radius of a semicircle is 14 cm find its circumference​

Answer 1

Answer: If it is a open semicircle, then the circumference is πr(2πr/2). If it is a closed semicircle, then the circumference will be (πr+2r)

Now the answer depends on this information.

If it is open, ANS: 14π cm

If it is closed, ANS: 71.98 cm (approx)

Answer 2

Answer:

Hence, value of circumference of semi circle will be 72 cm

Step-by-step explanation:

In context to question asked,

We have to determine the circumference of semi circle.

As per data given in the question,

We have,

Radius of semi circle = 14 cm

As we know that,

Circumference of semi circle is equal to half of circumference of circle plus value of diameter.

So, we have,

Formula for finding the circumference of semi circle as,

$Circumference \:C = (\Pi r + 2r), \\where \:'r' \:is \:the\: radius.$

So, for determining the value of circumference of semi circle we will put the value of radius in above formula.

Thus we will get.

$C = \Pi r +2r \\= \frac{22}{7}\times 14 +2\times 14\\=>(22 \times 2) + 28\\=>44+28 = 72\:cm$