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nevsk [136]
2 years ago
8

Find the area of a semicircle with radius r​

Mathematics
2 answers:
Anna [14]2 years ago
6 0

Answer:

Area of semicircle is

\frac{1}{2} (\pi \times {r}^{2} )

If you are helped with my answer pls tag me brianliest I really want it

THANK YOU......

iren [92.7K]2 years ago
4 0

Answer:

To calculate the area of a semicircle

We are gonna have to use the formula :

\frac{1}{2} π r² [ that is the formula to calculate the area of a semicircle ]

Step-by-step explanation:

If we want to calculate the radius of a semicircle with 4 ft --

we would first write the formula which is "\frac{1}{2} π r²"

Then, you would write: \frac{1}{2} π (4 ft)²

After that, you would write:  \frac{1}{2} (3.14)(16)

Type that into a calculator and you would get 25.12  as your answer

--

Why did we write 3.14 and 16? [ \frac{1}{2} (3.14)(16) ]

Bc, the first digits of pi are 3.14 .

We wrote 16 because 4² = 16 [ 4x4=16 ]

My explanation isn't that good so I would suggest watching the math antics video which is named "Circles, Circumference And Area"

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