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Vesnalui [34]
3 years ago
11

What is the area of a semi circle that has a diameter of 1 1/2?

Mathematics
2 answers:
SVEN [57.7K]3 years ago
5 0

Answer:

A=0.8836

Step-by-step explanation:

Area of circle:

\pi r^2

By using the area of a circle, we can get the area of a semicircle:

\frac{\pi r^2}{2}

Let's convert the mixed fraction to an improper fraction and then a decimal:

1\frac{1}{2} = \frac{3}{2} = 1.5

Now, we solved for the diameter, to get the radius, we need to divide the diameter by 2:

\frac{1.5}{2} =0.75

Now we have the radius, so we can plug in our values and find the area:

\frac{\pi0.75^2}{2} = 0.88357293

A=0.88357293

Elena-2011 [213]3 years ago
5 0

Answer:

<h2><u>0.88 cm²</u></h2>

Step-by-step explanation:

d = 1\frac{1}{2} = \frac{3}{2}

r = \frac{d}{2}

 = \frac{3}{2*2}

 = \frac{3}{4}

Now, area of circle = πr² = π\frac{3}{4}² = π\frac{9}{16}

                                         = <u>1.767 cm²</u>

Area of the semicircle = \frac{Area of Circle}{2} = \frac{1.767}{2}

                                     = <u>0.88 cm²</u>

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