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

Question

Mathematics

Nathen

3 May, 00:41

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

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Answers (2)

Know the Answer?

Alisson Morse · Answer 1

Step-by-step 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

Kelly Aguilar · Answer 2

Step-by-step 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