Question

the length of the arc of a semicircle is 110 cm find its perimeter and area

Answer 1

Step-by-step explanation:

Circle

Going by the basic definition it is a closed plane geometric shape. Now getting into technical jargon a circle is a locus of a point moving in a plane, in such a way that its distance from a fixed point is always constant. In layman terms, a round shape is often referred to as a circle.

Point seeking attention here is that the fixed distance is the radius of the circle. The radius of a circle has a major role for calculation of perimeter and area of circle and semi-circle. Most famous examples of a circle in a line are pizza, chapatti, wheel etc.

BHAI THEORY

Answer 2

$length \: of \: arc \: of \: \: semicircle \: is$

$half \: perimeter \: of \: circle$

$therefore$

$length \: of \: arc = \pi \times r$

$110 = \frac{22}{7} \times r$

$r = \frac{110 \times 7}{22}$

$r = 5 \times 7$

$r = 35$

$so \: circumferenc \: of \: circle \: =$

$= 2 \times length \: of \: are$

$= > 2 \times 110$

$= > 220m$

$now \: area$

$area = \pi \: {r}^{2}$

$= > \frac{22}{7} \times {35}^{2}$

$= > 22 \times 5 \times 35$

$= > 3,850 {m}^{2}$