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What is the area of the semicircle? Use 3.14 for pi. 22cm

What is the area of the semicircle? Use 3.14 for pi. 22cm-example-1
User VcLwei
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hi

area of circle is π* radius²

as radius is half diameter, and as diameter is 22 , so radius is 22 /2 = 11 cm

so area is 11²π and 11² = 121 then area is 121π

as it is say to use 3.14 for pi , then 121*3.14 = 379.94

but 379.94 is the area of the whole circle , and we only have half.

so : 379.94 / 2 = 189.97

area of semi circle is 189.97

User Martin Woodward
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