Question

find the area and circumference and semi circle 7cm​

Answer 1

a semicircle of radius 7 cm.

Perimeter of semicircle=12×Circumference of the circle+Diameter.

Perimeter=12×2πr+2r.

=227×7+2×7.

Answer 2

Step-by-step explanation:

area of semi circle =

$2\pir { \frac{r}{2 } }^{2}$

area =2×3.14×(3.5)²/2

=6.28×12.25

= 6.125cm²

circumference of semi circle=

$2\pi \times r$

C=2×3.14×3.5

=6.28×3.5

=20