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3 years ago

What is the area of the semi circle if the diameter is 10 cm

Mathematics

2 answers:

inysia [295]3 years ago

6 0

Answer:

39.25 cm

Step-by-step explanation:

A = 3.14 x r^2 / 2

if the diameter is 10 then the radius is 5

A = 3.14 x 5^2 / 2

A = 3.14 x 25 / 2

A = 78.5 / 2

A = 39.25

Fudgin [204]3 years ago

3 0

Answer:

39.25 cm

Step-by-step explanation:

The formula for a circle is pi x radius x radius.

So to get the radius, you multiply 10 and 1/2. You should get 5. Then you multiply 5 by 5. You should get 25.

Then you multiply 3.14 and 25. You should get 78.5.

The last step is to divide 2 by 78.5. You should get 39.25

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