Question

Hey!!✋✋

✴✴Help out... Find the perimeter and area of the semicircle with explaining ✴✴

Answer 1

Perimeter

Since the circumference of circe is 2πr

But since it is semi circle it will be πr

Therefore

Perimeter = πr+ d (d= diameter)

= 22/7*7 + 14

= 36 cm

Area

Since area of circle = πr^2

And semicircle = πr^2 / 2

Area = 22 * 7* 7 / 7* 2

= 77 sq cm

Answer 2

Solutions :-



Given :

Radius = 7 cm
Diameter = 14 cm


Find the perimeter of semicircle :-

We know the formula for finding the perimeter of semicircle = 1/2 π × d + d

$= \frac{1}{2} \times \frac{22}{7} \times 14 + 14 \\ \\ = 22 + 14 = 36$


Now,

Find the area of semicircle :-

We know the formula to find the area of semicircle = π × r^2/2

$= \frac{22}{7} \times \frac{ {7}^{2} }{2} \\ \\ = 11 \times 7 = 77$


Hence,
Perimeter of semicircle = 36 cm
Area of semicircle = 77 cm²