Question

Find the perimeter and area of a semi-circle whose diameter is: 5.6 cm​

Answer 1

$\huge\sf\red{Answer}$

Given that :

d = 5.6

r = 2.8

To find :

perimeter & area

$\rightarrow$ Perimeter of semicircle = πr

= $\sf{\frac{22}{7}× 2.8}$

= 8.8 cm

$\rightarrow$ Area of semicircle = 1/2πr^2

=$\sf{\frac{1}{2}×\frac{22}{7}×2.8×2.8}$

= 12.32 sq. cm