Question

What is the area of a semi circle w pi being 3.142 and a diameter of 19cm

Answer 1

Explanation:

Area of circle is A= pi *r ^2=283.38

while area of semi cirlce is half of total 283.385/2= 141.69

Answer 2

Explanation:

Area of semi circle is =pie × r^2 /2

And d=2r or r =d/2

So r =19/2

Thus area of semi circle is = 3.142×19×19/2×2×2 = =141.78 sq.cm