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16-06-2021
Mathematics

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Find the area of this semi-circle with diameter 18
Give your answer rounded to 2 DP.

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16-06-2021

Step-by-step explanation:

diameter(d): 18

radius(r): 18 ÷ 2 = 9

area of a semi-circle:

[tex]\frac{\pi {r}^{2}}{2}[/tex]

[tex]= \frac{\pi \times 9 \times 9}{2} = 127.23[/tex]

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