Question

The circumference of a semicircle is 72cm.Find its area​

Answer 1

Answer:

are of a circle is pier²

area of a semi circle is pie*r²/2

Answer 2

Answer:

The circumference formula is C=2πr . Since we are only talking about half a circle, then it is only half of this, which is C=πr

We plug our circumference into the formula.

C=πr

72=πr

π is approximately 3.14. Using this approximation, we have:

72=3.14r

r=22.93

Now we can plug this into the area formula, A=πr2

A=π(22.93)2

A=π(585.79)

A=1839.38cm2 (using the 3.14 approximation for π )

Step-by-step explanation:

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