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3 years ago

What is the radius of a semi circle when the area is 20cm

Mathematics

1 answer:

vazorg [7]3 years ago

6 0

hello :
the area of the circle is : 40 cm²
40 = <span>πr²
r² = 40/(3.14 )
r² = 12.73 cm</span>

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Step-by-step explanation:

60.54 is starting amount then subtract 45.87 left with 14.67 then divide by 3 get 4.89

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Answer:

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Step-by-step explanation:

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Let us simplify that expression first for future use.

$4\div9\frac{1}{3}=4\div\frac{28}{3} =4 X \frac{3}{28} =\frac{3}{7}$

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Using Ratio Method

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The equation c= $\frac{3}{7}$ f represents the relationship between c and f

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ale4655 [162]

Answer:

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Step-by-step explanation:

Use the method keep; change; flip.

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