The semicircles below have a radius of 21 cm each. Taking π as 227, what is the total area?
Question
The semicircles below have a radius of 21 cm each. Taking π as 227, what is the total area?
Solution
The question seems to be incomplete as it does not provide an image or a clear description of the number of semicircles. However, I'll show you how to calculate the area of a single semicircle with a radius of 21 cm.
The formula for the area of a circle is πr². Since we're dealing with a semicircle (which is half a circle), the formula becomes 1/2πr².
Given: Radius (r) = 21 cm π = 22/7
Substitute these values into the formula:
Area = 1/2 * (22/7) * (21 cm)²
Calculate the area and that will be the area of one semicircle. If there are more semicircles, multiply this result by the number of semicircles to get the total area.
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