Question

Find the area of semicircular sheet whose circumference is 22 cm

Answer 1

Answer:

19.25cm^2

Step-by-step explanation:

circumference if semi circle = 2πr

so 22 = 2*22/7*r

now 22 = 44/7

22*7/44= r

7/2= r

3.5=r

now area of semicircle = πr^2/2

so 22/7 * 3.5^2whole divided by 2

so 22/7*3.5*3.5/2

22*0.5*3.5/2

11*1.75

19.25cm^2

PLZ THANK MY ANSWER

Answer 2

Step-by-step explanation:

given :

perimeter/circumference of the semicircle is equal to 22 CM

therefore

$11 \times 35 =$

the primeter=2×22/7×r

22=44/7×r

22×7/44=r